Overview27Overload Relays
Combinations ofoverload relays and contactors
4/2 Siemens NS K · 2000
27Overload Relays
Contactors
Current rangeA
Thermally delayed overload relays CLASS 103RU1116 0.1 to 12
3RU1126 1..8 to 25
3RU1136 5.5 to 50
3RU1146 18 to 100
Solid-state overload relays CLASS 10 and 203RB1016 0.1 to 12
3RB1026 0.1 to 25 1)
3RB1036 6 to 50
3RB1046 13 to 100
Thermally delayed overload relays CLASS 103UA60 55 to 135
3UA61 55 to 150
3UA62 55 to 205
3UA66 80 to 400
Solid-state overload relays from CLASS 5 to 30, selectable3RB1246 0.25 to 100 4) 4) 4) 4)
3RB1253 50 to 205
3RB1257 125 to 500
3RB1262 200 to 820
Thermistor motor protection device3RN10 PTCs - Type A
Combination possible
3RT10 1Size S003/4/5.5 kW
3RT10 2Size S05.5/7.5/11 kW
3RT10 3Size S215/18.5/22 kW
3RT10 4Size S330/37/45 kW
SIRIUS 3R
27Overload Relays
4/3Siemens NS K · 2000
OverviewCombinations of
overload relays and contactors
1) Tripping class, CLASS 20 from 3 to 25 A.2) From setting range 135 to 180 A, installation as a single unit is required (heat dissipation).3) Installation only possible as a single unit4) 3RB12 with bar-type transformer, installation only possible as a single unit.
/—
—/ 2)2)
3) 3) 3)
/—
—/
3TF50/51Size 655/75 kW
3TF52/53Size 890/110 kW
3TF54/55Size 10132/160 kW
3TF56/57Size 12200/250 kW
3TF68/69Size 14375/450 kW
SIRIUS 3R
3RU11 Thermally Delayed Overload Relays
4/4 Siemens NS K · 2000
up to 100 A · CLASS 10
Selection and ordering data 3RU11 Thermally Delayed Overload Relays
Screw or Cage Clamp connection1), for mounting onto contactor or for installing as a single unit with adapter(adapter for installing as a single unit see Accessories)3RU11 overload relays with screw or Cage Clamp con-nection (for auxiliary conductors)• Auxiliary contacts 1 NO + 1 NC• Manual/automatic RESET• Switch position indicator
• STOP button• Test function• Phase failure sensitivity• Integrated sealable cover• CLASS 10
For 3RT1 contactor or soft starter 3RW3
Output of 4-pole 3-phase motors
Current setting range
Fuse3)gL/gG
Overload relays with screw connection
Overload relays with Cage Clamp connection
.
Order No. Price Order No. Price Weight approx
Size2)
at AC 50 Hz 400 VPnkW A A Preferred type 1 unit 1 unit kg
Size S00 with terminal for contactor coil and auxiliary contact3RU11 16- ..B0 S00 0.11 to 0.16 0.5 3RU11 16-0AB0 - - 0..12
0.14 to 0.2 1 3RU11 16-0BB0 - -0.06 0.18 to 0.25 1 3RU11 16-0CB0 - -0.09 0.22 to 0.32 1.6 3RU11 16-0DB0 - -
0.28 to 0.4 2 3RU11 16-0EB0 - - 0.120.12 0.35 to 0.5 2 3RU11 16-0FB0 - -0.18 0.45 to 0.63 2 3RU11 16-0GB0 - -
0.55 to 0.8 4 3RU11 16-0HB0 - -
0.25 0.7 to 1 4 3RU11 16-0JB0 - - 0.120.37 0.9 to 1.25 4 3RU11 16-0KB0 - -0.55 1.1 to 1.6 6 3RU11 16-1AB0 - -
1.4 to 2 6 3RU11 16-1BB0 - -
0.75 1.8 to 2.5 10 3RU11 16-1CB0 - - 0.121.1 2.2 to 3.2 10 3RU11 16-1DB0 - -1.5 2.8 to 4 16 3RU11 16-1EB0 - -
3.5 to 5 20 3RU11 16-1FB0 - -
2.2 4.5 to 6.3 20 3RU11 16-1GB0 - - 0.123 5.5 toto 8 25 3RU11 16-1HB0 - -4 7 to 10 35 3RU11 16-1JB0 - -5.5 9 to 12 35 3RU11 16-1KB0 - -
Size S03RU11 26- ..D0 S0 0.75 1.8 to 2.5 10 3RU11 26-1CB0 3RU11 26-1CD0 0.16
1.1 2.2 to 3.2 10 3RU11 26-1DB0 3RU11 26-1DD01.5 2.8 to 4 16 3RU11 26-1EB0 3RU11 26-1ED0
3.5 to 5 20 3RU11 26-1FB0 3RU11 26-1FD0
2.2 4.5 to 6.3 20 3RU11 26-1GB0 3RU11 26-1GD0 0.163 5.5 to 8 25 3RU11 26-1HB0 3RU11 26-1HD04 7 to 10 35 3RU11 26-1JB0 3RU11 26-1JD05.5 9 to 12.5 35 3RU11 26-1KB0 3RU11 26-1KD0
7.5 11 to 16 40 3RU11 26-4AB0 3RU11 26-4AD0 0.1614 to 20 50 3RU11 26-4BB0 3RU11 26-4BD017 to 22 63 3RU11 26-4CB0 3RU11 26-4CD0
11 20 to 25 63 3RU11 26-4DB0 3RU11 26-4DD0
Size S23RU11 36- ..B0 S2 3 5.5 to 8 25 3RU11 36-1HB0 3RU11 36-1HD0 0.3
4 7 to 10 35 3RU11 36-1JB0 3RU11 36-1JD05.5 9 to 12.5 35 3RU11 36-1KB0 3RU11 36-1KD0
7.5 11 to 16 40 3RU11 36-4AB0 3RU11 36-4AD0 0.314 to 20 50 3RU11 36-4BB0 3RU11 36-4BD0
11 18 to 25 63 3RU11 36-4DB0 3RU11 36-4DD015 22 to 32 80 3RU11 36-4EB0 3RU11 36-4ED0
18.5 28 to 40 80 3RU11 36-4FB0 3RU11 36-4FD0 0.336 to 45 100 3RU11 36-4GB0 3RU11 36-4GD0
22 40 to 50 100 3RU11 36-4HB0 3RU11 36-4HD0
Size S33RU11 46- ..D0 S3 11 18 to 25 63 3RU11 46-4DB0 3RU11 46-4DD0 0.5
15 22 to 32 80 3RU11 46-4EB0 3RU11 46-4ED0
18.5 28 to 40 80 3RU11 46-4FB0 3RU11 46-4FD0 0.536 to 50 125 3RU11 46-4HB0 3RU11 46-4HD0
30 45 to 63 125 3RU11 46-4JB0 3RU11 46-4JD037 57 to 75 160 3RU11 46-4KB0 3RU11 46-4KD0
70 to 90 160 3RU11 46-4LB0 3RU11 46-4LD0 0.545 80 to 1004) 200 3RU11 46-4MB0 3RU11 46-4MD0
1) See page 6 for notes on Cage Clamp connection.2) Consider the maximum rated operational current of contactors.
3) Max. fuse for overload relay only, type of coordination “2”. Fuse values for mounting onto contactor see from page 4/10.
4) Thermally delayed overload relays > 100 A see page 4/31.
SIRIUS 3R
3RU11 Thermally Delayed Overload Relays
4/5Siemens NS K · 2000
up to 100 A · CLASS 10
Selection and ordering data
Screw or Cage Clamp connection1), for installing as a single unit 3RU11 overload relays with mounted adapter for installing as a single unitScrew and snap-on mounting onto 35 mm standard mounting rail Size S3 also for 75 mm standard mounting rail 3RU11 overload relays with screw or Cage Clamp con-nection (for auxiliary conductors)• Auxiliary contacts 1 NO + 1 NC• Manual/automatic RESET• Switch position indicator
• Test function, STOP button• Phase failure sensitivity• Integrated sealable cover• CLASS 10
For 3RT1 contactor or soft starter3RW3
Output of 4-pole3-phase motors
Current setting range
Fuse3)gL/gG
Overload relays with screw connection
Overload relays with Cage Clamp connection
Order No. Price Order No. Price Weightapprox.
Size2)
at 50 Hz 400 V ACPnkW A A Preferred type 1 unit 1 unit kg
Size S003RU11 16-..C1 S00 0.11 to 0.16 0.5 3RU11 16-0AB1 3RU11 16-0AC1 0.16
0.14 to 0.2 1 3RU11 16-0BB1 3RU11 16-0BC10.06 0.18 to 0.25 1 3RU11 16-0CB1 3RU11 16-0CC10.09 0.22 to 0.32 1.6 3RU11 16-0DB1 3RU11 16-0DC1
0.28 to 0.4 2 3RU11 16-0EB1 3RU11 16-0EC1 0.160.12 0.35 to 0.5 2 3RU11 16-0FB1 3RU11 16-0FC10.18 0.45 to 0.63 2 3RU11 16-0GB1 3RU11 16-0GC1
0.55 to 0.8 4 3RU11 16-0HB1 3RU11 16-0HC1
0.25 0.7 to 1 4 3RU11 16-0JB1 3RU11 16-0JC1 0.160.37 0.9 to 1.25 4 3RU11 16-0KB1 3RU11 16-0KC10.55 1.1 to 1.6 6 3RU11 16-1AB1 3RU11 16-1AC1
1.4 to 2 6 3RU11 16-1BB1 3RU11 16-1BC1
0.75 1.8 to 2.5 10 3RU11 16-1CB1 3RU11 16-1CC1 0.161.1 2.2 to 3.2 10 3RU11 16-1DB1 3RU11 16-1DC11.5 2.8 to 4 16 3RU11 16-1EB1 3RU11 16-1EC1
3.5 to 5 20 3RU11 16-1FB1 3RU11 16-1FC1
2.2 4.5 to 6.3 20 3RU11 16-1GB1 3RU11 16-1GC1 0.163 5.5 to 8 25 3RU11 16-1HB1 3RU11 16-1HC14 7 to 10 35 3RU11 16-1JB1 3RU11 16-1JC15.5 9 to 12 35 3RU11 16-1KB1 3RU11 16-1KC1
Size S03RU11 26-4.B1 S0 7.5 11 to 16 40 3RU11 26-4AB1 - 0.21
14 to 20 50 3RU11 26-4BB1 -17 to 22 63 3RU11 26-4CB1 -
11 20 to 25 63 3RU11 26-4DB1 -
Size S23RU11 36-4.B1 S2 15 22 to 32 80 3RU11 36-4EB1 - 0.45
18.5 28 to 40 80 3RU11 36-4FB1 -36 to 45 100 3RU11 36-4GB1 -
22 40 to 50 100 3RU11 36-4HB1 -
Size S33RU11 46-4.B1 S3 30 45 to 63 125 3RU11 46-4JB1 - 0.73
37 57 to 75 160 3RU11 46-4KB1 -70 to 90 160 3RU11 46-4LB1 -
45 80 to 1004) 200 3RU11 46-4MB1 -
1) See page 6 for notes on Cage Clamp connection.2) Consider the maximum rated operational current of contactors.
3) Max. fuse for overload relay only, type of coordination “2”. Fuse values for mounting onto contactor see from page 4/10.
4) Thermally delayed overload relays > 100 A see page 4/31.
SIRIUS 3R
up to 100 A · CLASS 10 3RU11 Thermally Delayed Overload Relays
Accessories
4/6 Siemens NS K · 2000
Design For type Order No. Price Weight approx.
Pack.
Size 1 unit kg unit
Adapter for installing as a single unit3RU19 .6-3AA01 For separate mounting of overload relays, S00 3RU19 16-3AA01 0.04 1
Screw and snap-on mounting onto S0 3RU19 26-3AA01 0.0635 mm standard mounting rail S2 3RU19 36-3AA01 0.15Size S3 also for 75 mm standard mounting rail S3 3RU19 46-3AA01 0.23
Mechanical RESET3RU19 00-1A
with pushbutton,holder and indicator label
Resetting plunger, holder and funnel S00 to S3 3RU19 00-1A 0.02 1 set
Suitable pushbutton IP 65 ∅ 22 mm 3SB10 00-0AH01 0.01 10Holder for pushbutton 3SB19 02-1AC 0.02 100 Indicator label with inscription RESET 3SB19 01-4EM 20
Cable release with support for RESET3RU19 00-1. (a bore of 6.5 mm dia. is required Length 400 mm S00 to S3 3RU19 00-1B 0.07 1 set
in the switchboard, Length 600 mm 3RU19 00-1Cmax. switchboard thickness 8 mm)
Module for remote RESET, electrical3RU19 00-2A.71 Operating range 0.85 to 1.1 x Us S00 to S3
Power consumption AC 120 VA, DC 70 WON period 0.2 s to 4 sAC/DC 24 V to 30 V 3RU19 00-2AB71 0.06 1AC/DC 110 V to 127 V 3RU19 00-2AF71AC/DC 220 V to 250 V 3RU19 00-2AM71
CoverCover for cable lug and busbar connection S3 3RT19 46-4EA1 1
Cover for box terminals S2 3RT19 36-4EA2 1S3 3RT19 46-4EA2 1
SIRIUS 3R
3RU11 Thermally Delayed Overload Relays
4/7Siemens NS K · 2000
up to 100 A · CLASS 10Technical data according to
IEC 60 947-4-1 and IEC 60 947-5-1
1) Terminal department: degree of protection IP 00.2) See selection and ordering data from page 4/4.3) See page 4/10 and page 4/11.
Type 3RU11 16-.... 3RU11 26-.... 3RU11 36-.... 3RU11 46-....
Size S00 S0 S2 S3
Trip class acc. to IEC 60 947-4-1 CLASS 10
Phase failure sensitivity yes
Increased safety EEx e KEMA test certificate No.EX-97.Y.3235DMT 98 ATEX G001
Adjustable to automatic reset yes
RESET button with trip-free feature yes
Permissible ambient temperature(above +60 °C current reduction)
Storage/transport °C –55 to +80–20 to +70operation °C
Permissible rated current at• temperature inside cubicle 60 °C % 100• temperature inside cubicle 70 °C % 87
Temperature compensation °C up to 60
Switch position indicator yesTest function yesSTOP button yes
Terminal for contactor coil yes not requiredTerminal for contactor coil auxiliary contacts
yes not required
Degree of protection acc. to IEC 60 529/DIN VDE 0470 Part 1 IP 20 IP 201)
Shock-hazard protection acc. to DIN VDE 0106 Part 100 Safe from finger touch
Shock resistance with sine acc. to IEC 60 068 Part 2-27 g/ms 8/10
Main circuitRated insulation voltage Ui (pollution degree 3) V 690 1000
Rated impulse withstand voltage Uimp kV 6 8
Type of current DC, AC
Current setting A 0.11– 0.16up to 9 – 12
1.8 – 2.5up to 20 – 25
5..5 – 8up to 40 – 50
18 – 25up to 80 – 100
Power losses per unit (max.) W 3.9 to 6.6 3.9 to 6 6 to 9 10 to 16.5
Short-circuit protection with fuses overload relays alonetogether with contactor
2)3)
Conductor cross-section main circuit• Type of connection Screw connection Box terminal
• Terminal screw Pozidriv size 2 Pozidriv size 2 4 mmAllen screw
• Conductor cross-sections solid mm2 2 x (0.5 to 1..5) 2 x (1 to 2.5) 2 x (0.75 to 16) 2 x (2.5 to 16)mm2 2 x(0.75 to 2.5) 2 x (2.5 to 6) – –
stranded mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 25) 2 x (10 to 50)
mm2 2 x(0.75 to 2.5) 2 x (2.5 to 6) 1 x (0.75 to 35) 1 x (10 to 70)
finely stranded with end sleeve mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 16) 2 x (2.5 to 35)mm2 2 x(0.75 to 2.5) 2 x (2.5 to 6) 1 x (0.75 to 25) 1 x (2.5 to 50)
AWG conductor connections AWG 2 x (18 to 14) 2 x (14 to 10) 2 x (18 to 3) 2 x (10 to 1/0)solid or stranded AWG – – 1 x (18 to 2) 2 x (10 to 2/0)
• Removable box terminal busbar connection mm – – – 18 x 10
• with cable lug connection mm2 – – – to 2 x 70
SIRIUS 3R
3RU11 Thermally Delayed Overload Relays
4/8 Siemens NS K · 2000
up to 100 A · CLASS 10 Technical data according toIEC 60 947-4-1 and IEC 60 947-5-1
1) Up to IK ≤ 0.5 kA; ≤ 260 V.2) See page 6 for notes on Cage Clamp connection.3) Not acc. to IEC.
Type 3RU11 16-.... 3RU11 26-.... 3RU11 36-.... 3RU11 46-....
Size S00 S0 S2 S3
Auxiliary circuitAuxiliary contacts 1 NO + 1 NC
Contact rating
NC at AC, AC-14/AC-15 Rated operational current Ie at Ue:• 24 V A 4• 230 V A 3• 400 V A 1.5• 600 A 0.6
NO at AC, AC-14/AC-15 Rated operational current Ie at Ue:• 24 V A 3• 230 V A 2• 400 V A 1• 600 A 0.6
NC, NO at DC, DC-13 Rated operational current Ie at Ue:• 24 V A 1• 110 V A 0,15• 220 V A 0.1
Conventional thermal current Ith A 6
Contact reliability(suitability for PLC control; 17 V, 5 mA)
yes
Short-circuit protectionFuse links Utilization category gL/gG A 6
fast A 10Miniature circuit-breakers, C-characteris-tics
A 61)
Rated insulation voltage Ui (pollution degree 3) V 690
Rated impulse withstand voltage Uimp kV 6
Conductor cross-sections of auxiliary circuit
Type of connection Screw connection Cage Clamp connection2)
Terminal screw Pozidriv size 2 –
Min./max. conductor cross-sections solid mm2 2 x (0.5 to 1.5)/ 2 x (0.75 to 2.5) 2 x (0.5 to 2.5)stranded mm2 2 x (0.5 to 1.5)/ 2 x (0.75 to 2.5) 2 x (0.5 to 2.5)
finely stranded with end sleeve mm2 2 x (0.5 to 1.5)/ 2 x (0.75 to 2.5) 2 x (0.5 to 1.5)
AWG cond. connect., solid or stranded AWG 2 x (18 to 14) 2 x (18 to 14)
Adapter for installing as a single unit
for screw and snap-on mounting onto 35 mm standard mounting rail,Size S3 also for 75 mm standard mounting rail
Type 3RU19 16-3AA01
3RU19 26-3AA01
3RU19 36-3AA01
3RU19 46-3AA01
For overload relays 3RU11 16-.... 3RU11 26-.... 3RU11 36-.... 3RU11 46-....
Conductor cross-sections of main circuitType of connection Screw connection Box terminal
Terminal screw Pozidriv size 2 Pozidriv size 2 Pozidriv size 2 4 mmAllen screw
Minimum/maximum conductorcross-sections
finely stranded with end 1 concuctor mm2 0.5 to 2.5 1 to 6 0.75 to 25 2.5 to 50sleeve solid or stranded 1 conductor mm2 0.5 to 43) 1 to 6 0.75 to 35 2.5 to 70AWG conductor connections, solid or stranded 1 x AWG 18 to 14 14 to 10 18 to 2 10 to 1/0
s-, u-, U-Ratings
Auxiliary circuit Switching capacity B600. R300
SIRIUS 3R
3RU11 Thermally Delayed Overload Relays
4/9Siemens NS K · 2000
up to 100 A · CLASS 10
Selection guide
Contactor assemblies for star-delta starting
Rated motor Current setting range Overload relay Line and Star contactor Wiring current (The overload
relays must be setto 0.58 timesthe rated motor current)
delta contactor assembly kit
A A Type Type Type Type
Size S001.9 to 2.82.4 to 3.43.1 to 4.3
1.1 to 1.61.4 to 21.8 to 2.5
3RU11 16-1AB03RU11 16-1BB03RU11 16-1CB0
3RT10 153RT10 153RT10 15
3RT10 153RT10 153RT10 15
3RA19 13-2B3RA19 13-2B3RA19 13-2B
3.8 to 5.54.8 to 6.96 to 8.67.8 to 10.9
2.2 to 3.22.8 to 43.5 to 54.5 to 6.3
3RU11 16-1DB03RU11 16-1EB03RU11 16-1FB03RU11 16-1GB0
3RT10 153RT10 153RT10 153RT10 15
3RT10 153RT10 153RT10 153RT10 15
3RA19 13-2B3RA19 13-2B3RA19 13-2B3RA19 13-2B
9.5 to 13.812.1 to 17.215.5 to 21
5.5 to 87 to 109 to 12
3RU11 16-1HB03RU11 16-1JB03RU11 16-1KB0
3RT10 163RT10 173RT10 17
3RT10 153RT10 153RT10 15
3RA19 13-2B3RA19 13-2B3RA19 13-2B
Size S03.1 to 4.33.8 to 5.54.8 to 6.9
1.8 to 2.52.2 to 3.22.8 to 4
3RU11 26-1CB03RU11 26-1DB03RU11 26-1EB0
3RT10 243RT10 243RT10 24
3RT10 243RT10 243RT10 24
3RA19 23-2B3RA19 23-2B3RA19 23-2B
6 to 8.67.8 to 10.99.5 to 13.8
3.5 to 54.5 to 6.35.5 to 8
3RU11 26-1FB03RU11 26-1GB03RU11 26-1HB0
3RT10 243RT10 243RT10 24
3RT10 243RT10 243RT10 24
3RA19 23-2B3RA19 23-2B3RA19 23-2B
12.1 to 17.215.5 to 21.519 to 27.6
7 to 109 to 12.5
11 to 16
3RU11 26-1JB03RU11 26-1KB03RU11 26-4AB0
3RT10 243RT10 243RT10 25
3RT10 243RT10 243RT10 24
3RA19 23-2B3RA19 23-2B3RA19 23-2B
24.1 to 3429.3 to 37.934.5 to 43
14 to 2017 to 2220 to 25
3RU11 26-4BB03RU11 26-4CB03RU11 26-4DB0
3RT10 263RT10 263RT10 26
3RT10 253RT10 253RT10 25
3RA19 23-2B3RA19 23-2B3RA19 23-2B
Size S29.5 to 13.8
12.1 to 17.215.5 to 21.5
5.5 to 87 to 109 to 12.5
3RU11 36-1HB03RU11 36-1JB03RU11 36-1KB0
3RT10 343RT10 343RT10 34
3RT10 343RT10 343RT10 34
3RA19 33-2B3RA19 33-2B3RA19 33-2B
19 to 27.624.1 to 3431 to 4337.9 to 55.2
11 to 1614 to 2018 to 2522 to 32
3RU11 36-4AB03RU11 36-4BB03RU11 36-4DB03RU11 36-4EB0
3RT10 343RT10 343RT10 343RT10 34
3RT10 343RT10 343RT10 343RT10 34
3RA19 33-2B3RA19 33-2B3RA19 33-2B3RA19 33-2B
48.3 to 6962.1 to 77.669 to 86.2
28 to 4036 to 4540 to 50
3RU11 36-4FB03RU11 36-4GB03RU11 36-4HB0
3RT10 353RT10 363RT10 36
3RT10 343RT10 343RT10 34
3RA19 33-2B3RA19 33-2B3RA19 33-2B
Size S331 to 43.137.9 to 55.248.3 to 69
18 to 2522 to 3228 to 40
3RU11 46-4DB03RU11 46-4EB03RU11 46-4FB0
3RT10 443RT10 443RT10 44
3RT10 443RT10 443RT10 44
3RA19 43-2B3RA19 43-2B3RA19 43-2B
62.1 to 77.66 to 108.6
36 to 4545 to 63
3RU11 46-4HB03RU11 46-4JB0
3RT10 443RT10 44
3RT10 443RT10 44
3RA19 43-2B3RA19 43-2B
98.3 to 129.3120.7 to 155.2137.9 to 172.4
57 to 7570 to 9080 to 100
3RU11 46-4KB03RU11 46-4LB03RU11 46-4MB0
3RT10 453RT10 463RT10 46
3RT10 443RT10 443RT10 44
3RA19 43-2B3RA19 43-2B3RA19 43-2B
SIRIUS 3R
3RU11 Thermally Delayed Overload Relays
4/10 Siemens NS K · 2000
CLASS 10
Technical data
Short-circuit protection with fuses for motor feeders with short-circuit currents up to 70 kA at AC 50/60 Hz 690 VPermissible short-circuit fuses for motor starters comprising overload relay and contactor, type of coordination “2”
Type of coordination “1” see short-circuit protection of contactors, Part 3.
Size S00 UL-fuse
RK5
Circuit-breaker for starter protection at
Iq = 50 kA / AC 400 VCurrent setting range 3 kW 3RT10 15
Ie max = 7 A(at AC 50 Hz 400 V)
4 kW 3RT10 16Ie max = 9 A(at AC 50 Hz 400 V)
5.5 kW 3RT10 17Ie max = 12 A(at AC 50 Hz 400 V)
A gL/gG aM BS88T gL/gG aM BS88T gL/gG aM BS88T A
0.11 to 0.16 0.5 – – 0.5 – – 0.5 – – 1 –
0.14 to 0.2 1 – – 1 – – 1 – – 1 3RV1321-0BC10
0.18 to 0.25 1 – – 1 – – 1 – – 1 3RV1321-0CC10
0.22 to 0.32 1.6 – 2 1.6 – 2 1.6 – 2 1 3RV1321-0DC10
0.28 to 0.4 2 – 2 2 – 2 2 – 2 1.6 3RV1321-0EC10
0.35 to 0.5 2 – 2 2 – 2 2 – 2 2 3RV1321-0FC10
0.45 to 0.63 2 – 4 2 – 4 2 – 4 2.5 3RV1321-0GC10
0.55 to 0.8 4 – 4 4 – 4 4 – 4 3 3RV1321-0HC10
0.7 to 1 4 – 6 4 – 6 4 – 6 4 3RV1321-0JC10
0.9 to 1.25 4 – 6 4 – 6 4 – 6 5 3RV1321-0KC10
1.1 to 1.6 6 – 10 6 – 10 6 – 10 6 3RV1321-1AC10
1.4 to 2 6 – 10 6 – 10 6 – 10 8 3RV1321-1BC10
1.8 to 2.5 10 – 10 10 – 10 10 – 10 10 –
2.2 to 3.2 10 – 16 10 – 16 10 – 16 12 –
2.8 to 4 16 – 16 16 – 16 16 – 16 16 –
3.5 to 5 20 6 20 20 6 20 20 6 20 20 –
4.5 to 6.3 20 6 20 20 6 20 20 6 20 25 –
5.5 to 8 20 10 20 20 10 20 20 10 20 30 –
7 to 10 20 16 20 20 16 20 40 –
9 to 12 20 16 20 45 –
Size S0 UL-fuse
RK5
Circuit-breaker for starter protection at
Iq = 50 kA / AC 400 VCurrent setting range 5.5 kW 3RT10 24
Ie max = 12 A(at AC 50 Hz 400 V)
7.5 kW 3RT10 25Ie max = 17 A(at AC 50 Hz 400 V)
11 kW 3RT10 26Ie max = 25 A(at AC 50 Hz 400 V)
A gL/gG aM BS88T gL/gG aM BS88T gL/gG aM BS88T A
1.8 to 2.5 10 – 10 10 – 10 10 – 10 10 3RV1321-1CC10
2.2 to 3.2 10 – 16 10 – 16 10 – 16 12 3RV1321-1DC10
2.8 to 4 16 – 16 16 – 16 16 – 16 16 3RV1321-1EC10
3.5 to 5 20 6 20 20 6 20 20 6 20 20 3RV1321-1FC10
4.5 to 6.3 20 6 25 20 6 25 20 6 25 25 3RV1321-1GC10
5.5 to 8 25 10 25 25 10 25 25 10 25 30 3RV1321-1HC10
7 to 10 25 16 25 25 16 25 32 16 35 40 3RV1321-1JC10
9 to 12.5 25 20 25 25 20 25 35 20 35 45 3RV1321-1KC10
11 to 16 25 20 25 25 20 25 35 20 35 60 3RV1321-4AC10
14 to 20 25 20 25 35 20 35 80 3RV1321-4BC10
17 to 22 35 20 35 80 3RV1321-4CC10
20 to 25 35 20 35 100
SIRIUS 3R
3RU11 Thermally Delayed Overload Relays
4/11Siemens NS K · 2000
CLASS 10
Technical data
Short-circuit protection with fuses for motor feeders with short-circuit currents up to 70 kA at AC 50/60 Hz 690 VPermissible short-circuit fuses for motor starters comprising overload relays and contactor, type of coordination „2”
Type of coordination “1” see short-circuit protection of contactors, Part 3.
Size S2 UL-fuse
RK5
Circuit-breaker for starter protection at
Iq = 50 kA / AC 400 VCurrent setting range 15 kW 3RT10 34
Ie max = 32 A(at AC 50 Hz 400 V)
18.5 kW 3RT10 35Ie max = 40 A(at AC 50 Hz 400 V)
22 kW 3RT10 36Ie max = 50 A(at AC 50 Hz 400 V)
A gL/gG aM BS88T gL/gG aM BS88T gL/gG aM BS88T A
5.5 to 8 25 10 25 25 10 25 25 10 25 30 –
7 to 10 32 16 32 32 16 32 32 16 32 40 –
9 to 12.5 35 16 35 35 16 35 35 16 35 50 –
11 to 16 40 20 40 40 20 40 40 20 40 60 –
14 to 20 50 25 50 50 25 50 50 25 50 80 –
18 to 25 63 32 63 63 32 63 63 32 63 100 3RV1331-4DC10
22 to 32 63 35 63 63 35 63 80 35 80 125 3RV1331-4EC10
28 to 40 63 50 63 63 50 63 80 50 80 150 3RV1331-4FC10
36 to 45 63 50 63 80 50 80 175 3RV1331-4GC10
40 to 50 80 50 80 200 3RV1331-4HC10
Size S3 UL-fuse RK5
Circuit-breaker for starter protection at
Iq = 50 kA/ AC 400 VCurrent setting range 30 kW 3RT10 44
Ie max = 65 A(at AC 50 Hz 400 V)
37 kW 3RT10 45Ie max = 80 A(at AC 50 Hz 400 V)
45 kW 3RT10 46Ie max = 95 A(at AC 50 Hz 400 V)
A gL/gG aM BS88T gL/gG aM BS88T gL/gG aM BS88T A
18 to 25 63 32 63 63 32 63 63 32 63 100 –
22 to 32 80 35 80 80 35 80 80 35 80 125 –
28 to 40 80 50 80 80 50 80 80 50 80 150 –
36 to 50 125 50 125 125 50 125 125 50 125 200 –
45 to 63 125 63 125 160 63 160 160 63 160 250 3RV1341-4JC10
57 to 75 160 80 160 160 80 160 300 3RV1341-4KC10
70 to 90 160 100 160 350 3RV1341-4LC10
80 to 100 160 100 160 350 3RV1341-4MC10
SIRIUS 3R
CLASS 103RU11 Thermally Delayed Overload Relays
4/12 Siemens NS K · 2000
Description
Specifications
IEC 60 947-4-1, IEC 60 947-5-1 and DIN VDE 0660.
The 3RU11 overload relays are suitable for use in any climate.
The devices are shock-hazard-protected acc. to DIN VDE 0106 Part 100.
General
3RU11 overload relays belong to the new generation of SIRIUS 3R switching devices. They are available in four different sizes with up to 100 A.
The 3RU11 overload relays re-place the highly successful 3UA5 and 3UA7 devices. Out-standing features of the new re-lays include long-term stability and a long service life.The over-load relays are optimally matched, both electrically and mechanically, to the 3RT10 con-tactors and 3RW3 soft starter. They can, however, also be mounted separately with an adapter for installation as a sin-gle unit. Devices up to and in-cluding size S0 can be fitted on standard mounting rails without using tools.
3RU11 overload relays cannot be mounted on 3TF contactors.
Environment
The devices are manufactured using environmentally-compati-ble and recyclable materials only.
Application
3RU11 thermal overload relays provide overload protection for three-phase induction motors with rated currents of up to 100 A (45 kW, AC-3, 400 V).
Fuses or 3RV13 circuit-breakers for starter combinations (see Part 1) must be fitted for short-circuit protection.
Operation of frequency converters
The thermal overload relays 3RU11 are suitable for opera-tion on frequency converters.
1) See page 6 for notes on Cage Clamp connection.
Ambient conditionsThanks to the new bimetals used and continuous tempera-ture compensation, the devices can be implemented without re-strictions at an ambient temper-ature of up to 60 °C.
Auxiliary contactsThe overload relays are equipped with an NC contact for disconnecting the contactor and an NO contact for signalling tripping.The breaking capacity of the switching contacts is very high so that the contactor coils can be switched directly.
Trip classThe relays are designed in ac-cordance with trip class 10, i. e. they can be used for motor start-up times of up to 10 s.
Phase failure sensitivityA phase failure sensitivity func-tion is integrated in order to pro-vide overload protection in the event of a phase failure, i. e. premature tripping with double-phasing.
Setting theoverload relayThe current setting screw can be accessed once the transpar-ent, sealable cover has been re-moved. The overload relay must be set to the rated motor cur-rent.
STOP funktionActivating this function only af-fects the NC contact.
Overload relays 3RU11
a Equipment identifying markers Manual/automatic RESET selector switchd STOP buttonf Complete Order No. on front of deviceg Switch position indicator and TEST functionh Transparent cover, sealable,
secures the current setting screw,Test function and manual/automaticRESETposition
j Current setting screwk Terminal for contactor coil
(when mounted on contactor)l Terminal for auxiliary contacts
(when mounted on contactor)
a
s
d
f
Manual/automatic resetManual or automatic reset can be selected with the blue but-ton. The appropriate setting is selected by pressing and turn-ing the button and can be sealed.
Test function andswitch position indicatorThe switch position indicator also incorporates a test function which, when activated, simu-lates a tripped overload relay.Both auxiliary contacts are actu-ated and the switch positon is indicated.
Terminal for contactor coil and auxiliary contactWhen the 3RU11 16 overload re-lays (size S00) are mounted di-rectly on the contactor, the auxil-iary contact and coil terminals A2 of the contactor are fed through which considerably fa-cilitates wiring. This is not neces-sary with sizes S0 to S3 as the contactors are equipped with 4 coil terminals.
Cage Clamp connection1)As of now, 3RU11 overload re-lays are available with Cage Clamp terminals. S00 relays are fitted with Cage Clamp termi-nals on the main and auxiliary contacts and relay sizes S0 to S3 on the auxiliary contacts.
AccessoriesThe accessories available are suitable for use with all sizes.• Electrical remote RESET with
different voltage variants.• Mechanical remote RESET
comprising a tappet, funnel and holder for actuating the switchgear cabinet door with a 3SB1 pushbutton.
• Cable release for RESET for devices which are not easily accessible.
Overload protection of flame-proof motors of protection types “increased safety” EEx eEN 50 019/DIN VDE 0165, DIN VDE 0170/0171.KEMA – test certificate No.Ex-97.Y.3235 DMT 98 ATEX G001EN 50 019: 1977 + A1 ... A5, increased safety “e”:Appendix A, guidelines for tem-perature monitoring squirrel -cage motors in operation.
g
h
j
k
l
SIRIUS 3R
3RU11 Thermally Delayed Overload Relays
4/13Siemens NS K · 2000
CLASS 10
Description
The current-time curves show the relatonship between the trip-ping time from cold state and multiples of the set current Ie. When the relay is at operating temperature and carrying 1.0 × Ie, the tripping times are reduced to approximately 25 %. For single-pole loads the trip-ping curves lie between the curves shown. For normal oper-ation, all 3 bimetallic strips of the overload relay must be heated.The 3RU11 overload relays are suitable for protecting motors with phase control.For protecting single-phase or DC-loads, all three main con-ducting paths must be con-nected in series. The release current with a 3-pole symmetri-cal load is between 105 % and 120 % of the set current.
Tripping characteristics
Trip classes of thermal, de-layed magnetic or solid-state overload relays – excerpt from IEC 60 947-4-1CLASS Tripping time tA
in secondsat 7.2 x Iefrom cold state
10 A 2 < tA ≤1010 4 < tA ≤1020 6 < tA ≤2030 9 < tA ≤30
Typical time-current characteristic
1 0
1 0 0
1 0 0 0
1 0 0 0 0
5 0 0 0
2 0 0 0
5 0 0
2 0 0
5 0
2 0
5
2
1
1
2
5
1 0
4 06 0
1 0 0
0 , 6 0 , 8 1 2 3 4 6 8 1 0 2 0 3 0 4 0 6 0 8 0 x I nA
m i ns
1 5
N S K - 7 5 2 2
T r i p p i n g t i m e
3 - p o l el o a d i n g
2 - p o l el o a d i n g
C u r r e n t
A
Internal circuit diagrams
Protection of DC motors
Single-pole 2-pole
3RU11 16 overload relays
3RU11 2 to 3RU11 4 overload relays
NS
K-7
60
0
4 62
1 3 5
NS
K-7
60
1
4 62
1 3 5
9 5
9 6
9 7
9 8 A 2 1 4 / 2 2
NSK-7515c
4 T 2 6 T 32 T 1
1 L 1 3 L 2 5 L 3
TEST
RESET
STOP
95
96
97
98 NS
K-7
59
9
4T2 6T32T1
1L1 3L2 5L3
TE
ST
RE
SE
T
ST
OP
SIRIUS 3R
3RB10 Solid-State Overload Relays
4/14 Siemens NS K · 2000
up to 100 A · CLASS 10 and CLASS 20
Selection and ordering data3RB10 Solid-State Overload Relays
Screw connection, for mounting onto contactors or for installing as a single unit with adapter(adapter for installing as a single unit see Accessories)3RB10 overload relays with• Self-supply• Auxiliary contacts 1 NO + 1 NC• Manual/automatic RESET• Switch position indicator
• Test function, STOP button• Phase failure/Asymmetry sensitivity• CLASS 10
Installation as a single unit3RB10 with fitted adapter for installing as a single unit, for trip class CLASS 10
1) Consider the maximum rated operational current of the units.2) Thermally delayed overload relays > 100 A see page 4/19.
For contactoror
Output of 4-pole3-phase motors
Current setting range Fuse2)gL/gG
Overload relaysOrder No. Price
Weightapprox.
soft starter
Size1)
at AC 50 Hz 400 VPnkW A
A
Preferred type 1 unit kg
CLASS 10, size S00 with terminal for contactor coil and auxiliary contacts S00 up to 0.09 0.1 to 0.4 2 3RB10 16-1RB0 0.210
0.12 to 0.55 0.4 to 1.6 6 3RB10 16-1NB00.55 to 2.2 1.5 to 6 20 3RB10 16-1PB01.1 to 5.5 3 to 12 35 3RB10 16-1SB0
CLASS 10, size S0 S0 up to 0.09 0.1 to 0.4 2 3RB10 26-1RB0 0.225
0.12 to 0.55 0.4 to 1.6 6 3RB10 26-1NB00.55 to 2.2 1.6 to 6 25 3RB10 26-1PB01.1 to 5.5 3 to 12 35 3RB10 26-1SB03 to 11 6 to 25 63 3RB10 26-1QB0
CLASS 10, size S2 S2 3 to 11 6 to 25 63 3RB10 36-1QB0
7.5 to 22 13 to 50 100 3RB10 36-1UB0
CLASS 10, size S3 S3 7.5 to 22 13 to 50 125 3RB10 46-1UB0
11 to 45 25 to 100 200 3RB10 46-1EB0
Size1) Output of 4-pole3-phase motors
Current setting range Fuse2)gL/gG
Overload relaysOrder No. Price
Weightapprox.
at AC 50 Hz 400 VPnkW A
A
Preferred type 1 unit kg
CLASS 10, width 45 mmS00 0.1 to 0.4 2 3RB10 16-1RB1 0.210
0.4 to 1.6 6 3RB10 16-1NB11.5 to 6 20 3RB10 16-1PB13 to 12 35 3RB10 16-1SB1
S 0 6 to 25 63 3RB10 26-1QB1
CLASS 10, width 55 mm S 2 13 to 50 100 3RB10 36-1UB1
CLASS 10, width 70 mm S 3 25 to 100 200 3RB10 46-1EB1
SIRIUS 3R
3RB10 Solid-State Overload Relays
4/15Siemens NS K · 2000
up to 100 A · CLASS 10 and CLASS 20
Selection and ordering data
Screw connection, for mounting onto contactors or for installing as a single unit with adapter(adapter for installing as a single unit see Accessories)3RB10 overload relays with• Self-supply• Auxiliary contacts 1 NO + 1 NC• Manual/automatic RESET• Switch position indicator
• Test function, STOP button• Phase failure/Asymmetry sensitivity• CLASS 20
1) Consider the maximum rated operational current of the units.2) Thermally delayed overload relays > 100 A and see Page 4/19.
For contactoror
Output of 4-pole3-phase motors
Current setting range Fuse2)gL/gG
Overload relaysOrder No. Price
Weightapprox.
soft starter
Size1)
at AC 50 Hz 400 VPnkW A
A
Preferred type 1 unit kg
CLASS 20, size S00 with terminal for contactor coil and auxiliary contact S00 up to 0.09 0.1 to 0.4 2 3RB10 16-2RB0 0.210
0.12 to 0.55 0.4 to 1.6 6 3RB10 16-2NB00.55 to 2.2 1.5 to 6.0 20 3RB10 16-2PB01.1 to 5.5 3 to 12 35 3RB10 16-2SB0
CLASS 20, size S0 S0 1.1 btois 5.5 3 to 12 35 3RB10 26-2SB0 0.225
3 to 11 6 to 25 63 3RB10 26-2QB0
CLASS 20, size S2 S2 3 to 11 6 to 25 63 3RB10 36-2QB0
7.5 to 22 13 to 50 100 3RB10 36-2UB0
CLASS 20, size S3 S3 7.5 to 22 13 to 50 125 3RB10 46-2UB0
11 to 45 25 to 100 200 3RB10 46-2EB0
SIRIUS 3R
up to 100 A · CLASS 10 and CLASS 20 3RB10 Solid-State Overload Relays
Accessories
4/16 Siemens NS K · 2000
Design For type Order No. Price Weight approx.
Pack.
Size Preferred type 1 unit kg unit
Adapter for installing as a single unit3RU19 .6-3AA01 For separate mounting of overload relays, S00 3RU19 16-3AA01 0.04 1
screw and snap-on mounting onto S0 3RU19 26-3AA01 0.0535 mm standard mounting rail S2 3RU19 36-3AA01 0.15Size S3 also for75 mm standard mounting rail
S3 3RU19 46-3AA01 0.23
Mechanical RESET3RU19 00-1A
with pushbutton,holder and indicator label
Resetting plunger, holder and funnel S0 to S3 3RU19 00-1A 0.02 1 setSuitable pushbutton IP 65 ∅ 22 mm 3SB10 00-0AH01 0.01 10 Holder for pushbutton 3SB19 02-1AC 0.02 100 Indicator label with inscription RESET 3SB19 01-4EM 20
Cable release with support for RESET3RU19 00-1B, -1C A bore of ∅ 6.5 mm is required Length 400 mm
in the switchboard S00 to S3 3RU19 00-1B 0.07 1 set
For a max. switchboard thickness Length 600 mmof 8 mm
3RU19 00-1C
Module for remote RESET, electrical3RU19 00-2A.71 Operating range 0.85 to 1.1 x Us
Power consumption AC 120 VA, DC 70 WON period 0.2 s to 2 s
AC/DC 24 V to 30 V S00 to S3 3RU19 00-2AB71 0.06 1AC/DC 110 V to 127 V 3RU19 00-2AF71AC/DC 220 V to 250 V 3RU19 00-2AM71
Sealable cover, transparentFor covering current-setting screwand for immobilization of the selector switch Manual/automatic RESET(bag of 10 covers)
S00 to S3 3RB19 00-3B 1 bag
SIRIUS 3R
3RB10 Solid-State Overload Relays
4/17Siemens NS K · 2000
up to 100 A · CLASS 10 and CLASS 20Technical data according to
IEC 60 947-4-1 and IEC 60 947-5-1
1) Connection area: degree of protection IP 00.2) 3 V/m for current setting range 0.1 to 0.4 A.3) See Selection and ordering data.4) See table on page 4/19.
Type 3RB10 16- 3RB10 26- 3RB10 36- 3RB10 46-
Size S00 S0 S2 S3
Trip class IEC 60 .947-4-1 CLASS 10 and 20, depending on version
Phase failure sensitivity Tripping from warm state s < 3
PTB Test Report (increased safety EEx e) 3.43-8803/98
Permissible ambient temperature storage/transport °C –55 to +80operation °C –20 to +70
Adjustable to automatic reset yes
Recovery time for automatic RESET min ca. 4for manual RESET sofort
Switch position indicator/Test function yes
RESET button yesSTOP button yes
Terminal for contactor coil yes not required
Terminal for auxiliary contacts yes not required
Degree of protection acc. to IEC 60 529/DIN VDE 0470 Part 1 IP 20 IP 201)
Shock-hazard protection acc. to DIN VDE 0106 Part 100 Safe from finger touch
Shock resistance with sine acc. toacc. to IEC 60 068 Part 2-27 g/ms 8/10 and 15 /11
Mounting position any
EMC immunity Conducted interference injectionBurst acc. to IEC 61 000-4-4: (corresponds to severity 3)
kV 2
Conducted interference injectionSurge acc. to IEC 61 000-4-5: (corresponds to severity 3)
kV 2
Electrostatic dischargeacc. to IEC 61 000-4-2: (corresponds to severity 3)
kV 8
Field-generated interference injectionacc. to IEC 61 000-4-3:(corresponds to severity 3)
V/m 6 10 2) 10
Resistance to extreme climates Humidity % 100
Main circuitRated insulation voltage Ui (pollution degree 3) V 690 1000
Rated impulse withstand voltage Uimp kV 6 8
Type of current AC
Frequency range 50/60 Hz ± 3
Current setting A 0.1– 0.4to 3 – 12
0.1– 0.4to 6 – 25
6 – 25to 13 – 50
13 – 50to 25 – 100
Own power consumption W (VA) approx. 0.05
Short-circuit protection with fuses Overload relays alone 3)
together with contactor 4)Conductor cross-sections for main circuit
• Type of connection Screw connection Box terminal
• Terminal screw Pozidriv size 2 Pozidriv size 2 Pozidriv size 2 4mmAllen screw
• Conductor cross-sections solid mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 16) 2 x (2.5 to 16)mm2 2 x (0.75 to2.5) 2 x (2.5 to 6)
stranded mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 25) 2 x (10 to 50)mm2 2 x(0.75 to 2.5) 2 x (2.5 to 6) 1 x (0.75 to 35) 1 x (10 to 70)
finely stranded with end sleeve mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 16) 2 x (2.5 to 35)mm2 2 x(0.75 to 2.5) 2 x (2.5 to 6) 1 x (0.75 to 25) 1 x (2.5 to 50)
AWG conductor connections AWG 2 x (18 to 14) 2 x (14 to 10) 2 x (18 to 3) 2 x (10 to 1/0)solid or stranded AWG – – 1 x (18 to 2) 2 x (10 to 2/0)
• Removable box terminal Busbar connection mm – – – 18 x 10
• With cable lug connection mm2 – – – to 2 x 70
SIRIUS 3R
3RB10 Solid-State Overload Relays
4/18 Siemens NS K · 2000
up to 100 A · CLASS 10 and CLASS 20 Technical data according toIEC 60 947-4-1 and IEC 60 947-5-1
1) Up to IK ≤ 0,5 kA; ≤ 260 V.2) Not acc. to IEC.
Type 3RB10 16- 3RB10 26- 3RB10 36- 3RB10 46-
Size S00 S0 S2 S3
Auxiliary circuitAuxiliary contacts 1 NO + 1 NC
Contact ratingat AC-14/AC-15 Rated operational current Ie at Ue:
• 24 V A 4• 125 V A 4• 230 V A 3• 400 V A 2• 690 V A 1
at DC-13 Rated operational current Ie at Ue:• 24 V A 1• 110 V A 0.22• 220 V A 0.1
Contact reliability Contacts suitable for PLCs (17 V, 5 mA)
yes
Short-circuit protection
Fuse links Utilization category gL/gG A 6fast A 10
Miniature circuit-breaker C-characteristics (to lk <= 0.5 kA; <= 260 V) A 6 1)
Rated insulation voltage Ui (pollution degree 3) V 690
Rated impulse withstand volltage Uimp kV 6
Conductor cross-sections of auxiliary circuitType of connection Screw connection
Terminal screw Pozidriv size 2
Min./ max. conductor cross-sections finely stranded with end sleeve mm2 2 x (0.5 to 1.5)/ 2 x (0.75 to 2.5)
solid or stranded mm2 2 x (0.5 to 1.5)/ 2 x (0.75 to 2.5)AWG conductor connections, AWG 2 x (18 to 14) solid or stranded
Adapter for installing as a single unit
For screw and snap-on mounting onto 35 mm standard mounting rail,size S3 also for 75 mm standard mounting rail
Type 3RU19 16-3AA01
3RU19 26-3AA01
3RU19 36-3AA01
3RU19 46-3AA01
Conductor cross-sections main circuit
Type of connection Screw connection Box terminalTerminal screw Pozidriv Pozidriv Pozidriv 4 mm
Allen screwMin./max. conductor cross-sections finely stranded with end sleeve mm2 1 x (0.5 to 2.5) 1 x (1 to 6) 1 x (0.75 to 25) 1 x (2.5 to 50)
Min./max. conductor cross-sections solid or stranded mm2 1 x (0.5 to 4 2) 1 x (1 to 6) 1 x (0.75 to 35) 1 x (2.5 to 70)
Min./max. conductor cross-sections AWG conductor connections,solid or stranded
mm2 1 x (18 to 14) 1 x (14 to 10) 1 x (18 to 2) 1 x (10 to 1/0)
s-, u-, U-ratings
Auxiliary circuit Switching capacity B600. R300
SIRIUS 3R
3RB10 Solid-State Overload Relays
4/19Siemens NS K · 2000
CLASS 10 and CLASS 20
Technical data
Short-circuit protection with fuses for motor feedersfor short-circuit currents up to 50 kA at 690 V
1) Mounting of contactor not possible, only installation as a single unit with individual wiring.2) Observe the operational voltage. 3) Coordination and short-circuit equipment according to IEC 60 947-4-1/DIN VDE 660 Part 102. Type of coordination “1”: The contactor or starter must not endanger persons or the installation
in the event of a short-circuit. They do not need to be suitable for further operation without repair and the renewal of parts.
Type of coordination “2”: The contactor or starter must not endanger persons or the installation in the event of a short-circuit and must be suitable for further use.There is a danger of contact welding.
Overload relays contactor CLASS Fuse links2)Current setting 5 and 10 20 NH Type 3NA NH Britishrange Rated operational current Ie DIAZED Type 5SB Type 3ND Standard UL-listed
fusesAC-3 in A bei NEOZED Type 5SE fuses
Utilization category gL/gGtype of coordination3)
aM BS88, Type T
CLASSR K5
Type Type 400V
500V
690V
400V
500V
690V
“1” “2” “2” “1” “2”
Size S000.1 A to 0.4 A 3RT10 15 0.4 0.4 0.4 0.4 0.4 0.4 25 2 25 2 1.63RB10 16
0.4 A to 1.6 A 3RT10 15 1.6 1.6 1.6 1.6 1.6 1.6 25 6 35 6 63RB10 16
1.5 A to 6 A 3RT10 15 6 5 4 6 5 4 35 20 35 20 253RB10 16 3RT10 17 6 6 6 6 6 6 35 20 35 20
3 A to 12 A 3RT10 17 12 9 6.3 10 6 3 35 20 35 20 453RB10 16
Size S00.1 A to 0.4 A 3RT10 24 0.4 0.4 0.4 63 2 63 2 1.60.4 A to 1.6 A 3RT10 24 1.6 1.6 1.6 63 6 63 6 61.5 A to 6 A 3RT10 24 6 6 6 63 25 20 63 25 253 A to 12 A 3RT10 24 12 12 12 12 12 12 63 25 20 63 25 453RB10 26
6 A to 25 A 3RT10 24 12 12 12 12 12 12 63 25 20 63 25 703RB10 26 3RT10 25 17 17 13 16 16 13 63 25 20 63 25 70
3RT10 26 25 18 13 16 16 13 100 35 20 63 35 100
Size S26 A to 25 A 3RT10 34 25 25 25 22 22 22 125 63 50 125 63 1003RB10 36 3RT10 35 25 25 25 25 25 25 125 63 50 125 63 100
13 A to 50 A 3RT10 34 32 32 31 22 22 22 125 63 50 125 63 1253RB10 36 3RT10 35 40 40 40 29 29 29 125 63 50 125 63 150
3RT10 36 50 50 40 33 33 33 160 80 50 125 80 200
Size S313 A to 50 A 3RT10 44 50 50 50 49 49 49 250 100 63 250 100 2003RB10 46 3RT10 45 50 50 50 50 50 50 250 100 80 250 100 200
25 A to 100 A 3RT10 44 65 65 57 49 49 49 250 125 63 250 125 2503RB10 46 3RT10 45 80 80 80 53 53 53 250 160 80 250 160 350
3RT10 46 95 95 95 59 59 59 250 160 100 250 160 350
3TF501) 100 100 100 76 76 76 250 200 125 250 160 1603TF511) 97 97 97 250 200 160 250 200 2003TF521) 100 100 100 250 200 200 250 200 250
SIRIUS 3RSIRIUS 3R
up to 100 A ·CLASS 10 and CLASS 203RB10 Solid-State Overload Relays
4/20 Siemens NS K · 2000
Description
SpecificationsIEC 60 947-4-1, IEC 60 947-5-1 and DIN VDE 0660.3RB10 overload relays are suit-able for use in any climate.The devices are shock-hazard-protected acc. to DIN VDE 0106, Part 100.
GeneralThe 3RB10 overload relays form part of the new SIRIUS 3R switchgear generation. The solid-state version of the SIRIUS 3R overload relay is noted for its extensive setting ranges (set-ting ratio 1:4), for the phase fail-ure protection function (see characteristic curves) and also for the minimal energy require-ment. In terms of dimensions and termination, the solid-state (3RB10) and the thermally de-layed types (3RU11) are 100 % compatible. These devices are particularly suitable where mo-tor protection requirements are high and for motor starting times up to 20 s (CLASS 20 version). A special coating of the printed-circuit board and of the elec-tronic components assures reli-able operation even in aggres-sive and tropical atmospheres. Four sizes and two variants are available up to 100 A. The over-load relays are optimally matched, both electrically and mechanically, to the 3RT10 con-tactors or 3RW3 soft starter. They can, however, also be mounted separately with an adapter for installation as a sin-gle unit. Devices up to and in-cluding size S0 can be fitted on standard mounting rails without using tools.
Application3RB10 solid-state overload re-lays provide overload protec-tion for three-phase induction motors with rated currents of up to 100 A (45 kW, AC-3, 400 V).For short-circuit protection with fuses or circuit-breakers, the fusing values of the contactors must be taken into account.
OperationThe solid-state overload relays have been developed for use in sinusoidal 50/60 Hz voltage net-works. No additional power sup-ply is required for operation. Current transformers (for mea-surement) are already inte-grated. An ASIC (application-specific integrated circuit) checks the current values of each phase and initiates re-lease in the event of overload or phase failure.The tripping current corre-sponds to 114 % of the set cur-rent.The overload relays must be set to the rated motor current.
Operation on frequencyconvertersThe 3RB10 solid-state overload relays are not suitable for the operation on frequency convert-ers. (Use thermal overload re-lays.)
Operation of single-phase motors
The 3RB10 solid-state overload relay is not suitable for the oper-ation of single-phase motors. Use the normal 3RU11 thermal overload relay instead.
Trip classesThe devices are available in CLASS 10 for normal starting (motor starting times up to 10 s) and in CLASS 20 for arduous startup conditions (motor start-ing times up to 20 s).
Phase failure protectionThe 3RB10 solid-state overload relays are equipped with phase-failure protection. If a phase fails, the device trips after only 3 s.
STOP functionActivating this function only af-fects the NC contact.
Manual/automatic resetManual or automatic reset can be selected with the blue but-ton. The appropriate setting is selected by pressing and turn-ing the button.
Bei Automatik-RESETsetzt das Überlastrelaisnach einer Wiederbere-itschaftszeit von 4 min
zurück. Rücksetzen perHand ist jederzeit
möglich.
Test function andswitch position indicatorThe switch position indicator also incorporates a test function which, when activated, simu-lates a tripped overload relay.Both auxiliary contacts are actu-ated and the switch position is indicated.
Terminal for contactor coil and auxiliary contactWhen the 3RB10 16 overload relay (size S00) is mounted di-rectly on the contactor, the aux-iliary contact and coil terminal A2 of the contactor are fed through which considerably fa-cilitates wiring. This is not nec-essary with sizes S0 as the con-tactors are equipped with 4 coil terminals.
Auxiliary contactsThe overload relays are equipped with an NC contact for disconnecting the contactor and an NO contact for signalling tripping.The breaking capacity of the switching contacts is very high so that the contactor coils can be switched directly.
Overload relays 3RB10
a Test function andswitch position indicator
s STOP buttond Manual/automatic RESET se-
lector switchf 1NO + 1NCg Trip classh Current setting screw,
setting ratio 1:4e. g. 3 to 12 A
a
sd
f
MountingThe overload relays are mounted directly on the 3RT10 contactors. If they are fitted indi-vidually on a connector base, they can be fastened by means of screws or placed on a mount-ing rail. The connector bases of the 3RU11 thermally delayed re-lays can be used.
AccessoriesThe accessories of the 3RU11 thermal overload relays can be used for the 3RB10 solid-state overload relays.• Electrical remote RESET with
different voltage variants.• Mechanical remote RESET
comprising a tappet, funnel and holder for actuating the switchgear cabinet door with 3SB1 pushbutton.
• Cable release for RESET for devices which are not easily accessible.
• Sealable cover.
PTB Test Report
The solid-state overload relay 3RB10 conforms to the specifica-tions for overload protection of explosion-protected motors with the “increased safety” type of protection EEx e EN 50 019/ DIN VDE 0165, DIN VDE 0170/171 and PTB testing rules.
PTB Test Report No. 3.43-8803/98
SIRIUS 3R
3RB10 Solid-State Overload Relays
4/21Siemens NS K · 2000
CLASS 10 and CLASS 20
Description
Circuit diagrams
3RB10 16 overload relays 3RB10 26 to 3RB10 46 overload relays
9 5
9 6
9 7
9 8 A 2 1 4 / 2 2
NSK-7515c
4 T 2 6 T 32 T 1
1 L 1 3 L 2 5 L 3
TEST
RESET
STOP
95
96
97
98 NS
K-7
59
9
4T2 6T32T1
1L1 3L2 5L3
TE
ST
RE
SE
T
ST
OP
Trip classes of thermal, de-layed magnetic or solid-state overload relays – excerpt from IEC 60 947-4-1CLASS Tripping time tA
in secondsat 7,2 x Iefrom cold state
CLASS 10 A 2 < tA ≤10CLASS 10 4 < tA ≤10CLASS 20 6 < tA ≤20CLASS 30 9 < tA ≤30
Time-current characteristic for CLASS 10
Time-current characteristic for CLASS 20
1 0
6
4
64
2
1 2 4 1 0 x I e
smin
N S K - 7 9 5 0 a
0 , 61
6
81 0
5 012
2 0
4 01
2
3
A
Tripping time
T r i p p i n g c u r r e n t ( a v e r a g e )
The time-current characteristics show the behavior at start with 3-pole loading :
In the event of phase failure or current unbalance, the phase failure protection function be-comes active. The overload re-lay trips after only 3 s.The characteristic curves of CLASS 10 and the behavior in operation are replicated from the 3RU overload relays.
Time-current characteristics
$ from cold state,% from warm state and& in the event of phase failure
or current unbalance ≥ 40 %
SIRIUS 3R
1 0
6
4
64
2
1 2 4 1 0 x I e
smin
N S K - 1 0 4 8
0 , 61
6
81 0
5 012
2 0
4 0
1
2
3
A
Tripping time
T r i p p i n g c u r r e n t ( a v e r a g e )
3RB12 Solid-State Overload Relays
4/22 Siemens NS K · 2000
CLASS 5 to CLASS 30
Selection and ordering data3RB12 Solid-State Overload Relays
3RB2 solid-state overload relays • For trip classes 5/10/15/20/25/30, changeable• Input T1/T2 for thermistor sensors (PTCs) for full motor protection• Input C1/C2 for earth-fault detection with additional 3UL22 summation current transformer • Manual/automatic/remote RESET Y1/Y2, test functions• 2 outputs, 1 NO and 1 NC each• 3 LEDs for operation and status displays
1) The setting range from 0.25 A to 1.25 A is obtained by multiple winding of the main conducting paths.2) The internal earth-fault detection detects fault currents > 30% from the set current.
Current setting range Rated control Mountable contactors Overload relays Weightsupply voltage Order No. Price approx.
A Type 1 unit kg
3RB12 solid-state overload relays 3RB12 46 1.251) to 6.3 110 V to 120 V 50/60 Hz Installation as a single
unit3RB12 46-1PG@@ 0,60
220 V to 240 V 50/60 Hz 3RB12 46-1PM@@24 V DC 3RB12 46-1PB @@
6.3 to 25 110 V to 120 V 50/60 Hz Install. as a single unit 3RB12 46-1QG@@ 0.60220 V to 240 V 50/60 Hz 3RB12 46-1QM@@24 V DC 3RB12 46-1QB @@
25 to 100 110 V to 120 V 50/60 Hz Install. as a single unit 3RB12 46-1EG@@ 0.60220 V to 240 V 50/60 Hz 3RB12 46-1EM@@24 V DC 3RB12 46-1EB @@
3RB12 53 50 to 205 110 V to 120 V 50/60 Hz 3TF50 to 3TF52 3RB12 53-0FG@@ 1.0220 V to 240 V 50/60 Hz 3RB12 53-0FM@@24 V DC 3RB12 53-0FB @@
3RB12 57 125 to 500 110 V to 120 V 50/60 Hz 3TF53 to 3TF57 3RB12 57-0KG@@ 1.90220 V to 240 V 50/60 Hz 3RB12 57-0KM@@24 V DC 3RB12 57-0KB @@
3RB12 62 200 to 820 110 V to 120 V 50/60 Hz 3TF68. 3TF69 3RB12 62-0LG@@ 3.20220 V to 240 V 50/60 Hz 3RB12 62-0LM@@24 V DC 3RB12 62-0LB @@
Order No. supplement
Design Order No. supplement Additional price
3RB12 . .- . . .@@ Preferred type
Standard version1 NO + 1 NC 1 NO + 1 NC
• Overload/thermistor • Earth-fault RB12 . .- . . . 0 0• Overload/thermistor/
earth-fault • Overload warning 3RB12 . .- . . . 1 0
Version with internal earth-fault detection2)Same as standard version, but additionally with internal earth-fault detection,for 3-conductor networks only, not for single-phase motors, but suitable for star-delta switching.
1 NO + 1 NC 1 NO + 1 NC
• Overload/thermistor • Earth-fault 3RB12 . .- . . . 2 0• Overload/thermistor/
earth-fault • Overload warning 3RB12 . .- . . . 3 0
Bistable versionSame as standard version, but with the bistable output relay, no change in the switching state of the auxiliary contacts in the event of failure of the control supply voltage.
1 NO + 1 NC 1 NO + 1 NC
• Overload/thermistor • Earth-fault 3RB12 . .- . . . 0 1• Overload/thermistor/
earth-fault • Overload warning 3RB12 . .- . . . 1 1
SIRIUS 3R
3RB12 Solid-State Overload Relays
4/23Siemens NS K · 2000
CLASS 5 to CLASS 30
Selection and ordering data
3RB12 solid-state overload relays with analog output,same as standard version 3RB12 . .- . . . 00, but additionally with analog output signal4 to 20 mA fot the motor current, referred to the set current value.• For measuring instruments with 4 to 20 mA input or for processing in control systems, e.g.
- moving coil indicator, front dimensions 96 mm x 96 mm, Order No. M01604-P9270 - changing scale 0 to 125 %, Order No. M01733-V0016-Z406. For other versions, see catalog MP12 B.
• Overload display up to 125 % of the set current (corresponds to 20 mA).• Motor current = current setting corresponds to 16.8 mA = 100 %.• Communication via ASi with analog module 3RK12 07-1BQ00-0AA3 possible.
1) The setting range from 0.25 A to 1.25 A is obtained by multiple winding of the main conducting paths.
Current setting range Rated Mountable contactors Overload relays Weightcontrol supply voltage Order No. Price approx.
A Type Preferred type 1 unit kg
3RB12 solid-state overload relays with analog output3RB12 46 1.251) up to 6.3 110 V to 120 V 50/60 Hz Install. as a single unit 3RB12 46-1PG40 0.60
220 V to 240 V 50/60 Hz 3RB12 46-1PM4024 V DC 3RB12 46-1PB40
6.3 up to 25 110 V to 120 V 50/60 Hz Install. as a single unit 3RB12 46-1QG40 0.60220 V to 240 V 50/60 Hz 3RB12 46-1QM4024 V DC 3RB12 46-1QB40
25 up to 100 110 V to 120 V 50/60 Hz Install. as a single unit 3RB12 46-1EG40 0.60220 V to 240 V 50/60 Hz 3RB12 46-1EM4024 V DC 3RB12 46-1EB40
3RB12 53 50 up to 205 110 V to 120 V 50/60 Hz 3TF50 to 3TF52 3RB12 53-0FG40 1.0220 V to 240 V 50/60 Hz 3RB12 53-0FM4024 V DC 3RB12 53-0FB40
3RB12 57 125 up to 500 110 V to 120 V 50/60 Hz 3TF53 to 3TF57 3RB12 57-0KG40 1.90220 V to 240 V 50/60 Hz 3RB12 57-0KM4024 V DC 3RB12 57-0KB40
3RB12 62 200 up to 820 110 V to 120 V 50/60 Hz 3TF68. 3TF69 3RB12 62-0LG40 3.20220 V to 240 V 50/60 Hz 3RB12 62-0LM4024 V DC 3RB12 62-0LB40
Accessories for 3RB12 overload relays
Window size Rated fault current In Order No. Price Weight
mm A 1 unit kg
Summation current transformer for external earth-fault detection40 0.3 3UL22 01-1A 0.35
0.5 3UL22 01-2A1 3UL22 01-3A
65 0.3 3UL22 02-1A 0.600.5 3UL22 02-2A1 3UL22 02-3A
120 0.3 3UL22 03-1A 2.500.5 3UL22 03-2A1 3UL22 03-3A
Direct voltage adapterFor operation of a 3RB12 with the control supply voltageof 24 V DC at DC voltages from 30 V to 120 V
7PX80 40-0A 0.30
SIRIUS 3R
CLASS 5 to CLASS 303RB12 Solid-State Overload Relays
Accessories
4/24 Siemens NS K · 2000
Design For type Order No. Price Weight approx.
Pack.
1 unit kg Unit
Sealable cap3RB19 00-0A for current-setting knob and CLASS selector 3RB12 3RB19 00-0A 0.01 1
Push-in lugs3RB19 00-0B for screw mounting onto a mounting plate
2 items required per overload relays (1 set = 10 items).
3RB12 46 3RB19 00-0B 0.01 10
Terminal cover3TX7 506-0A • Terminal cover
for installation as a single unit or load-side when directly mounted
3RB12 53 3TX7 506-0A 0.01 10
3RB12 57 3TX7 536-0A 0.003 2
3RB12 62with 3TF68
3TX7 686-0A 0.17 2
3RB12 62with 3TF69
3TX7 696-0A 0.17 2
3TX7 506-0B • Terminal coverbetween contactor and overload relaywhen directly mounted
3RB12 53 3TX7 506-0B 0.01 10
3RB12 57 3TX7 536-0B 0.065 10
3RB12 62with 3TF68
3TX7 686-0B 0.065 10
3RB12 62with 3TF69
3TX7 696-0B 0.065 10
Base plate3UF19 00-0JA00 for snap-on mounting on 75 mm standard mounting rail 3RB12 53 3UF19 00-0JA00 0.2 1
SIRIUS 3R
3RB12 Solid-State Overload Relays
4/25Siemens NS K · 2000
CLASS 5 to CLASS 30
Technical data
Tripping In case of overload, phase failure and current unbalance ( >40% of the current setting Ie ) as well as with responding of the thermistor motor protection and in case of earth fault
Trip class Selectable; CLASS 5, 10, 15, 20, 25, 30
PTB Test Report (increased safety EExe Nr.:) 3.53-3907/96
Overload warning Above 1.15 x Ie with balanced loading; above 0.85 x Ie withunbalanced loading
Operation Combined TEST/RESET button with functional test; automatic and remote RESET possible; rotary knob of current setting Ie ; 6-step rotary switch for trip class (CLASS 5 to 30)
Display
green LED “Ready” Steady light ON; ready for operationOFF; no control supply voltage or functional test was negative (device is locked)
red LED “Overload” Steady light Overload tripping by current and/or thermistorFlashing light Overload warning
red LED “Ground Fault” Steady light Earth-fault
Permissible ambient/storage temperature –25 °C to +70 °C/–40 °C to +80 °C
Mounting altitude to 2000 m above sea level
Degree of protection (acc. to IEC 529) IP 20 (≤100 A max. setting current Ie ); IP 00 (>100 A max. current setting Ie )
Shock resistance (sine pulse) 15 g/11 ms
Type of construction Compact, i. e. the current transformers for all sizes are already inte-grated in the housing
DimensionsW x H x D mm x mm x mm
3RB12 46 (Ie ≤100 A): 70 x 85 x 132.5; 3RB12 53 (Ie ≤205 A): 120 x 145 x 155; 3RB12 57 (Ie ≤500 A): 145 x 160 x 175; 3RB12 62 (Ie ≤820 A): 230 x175 x190
Mounting position any
Fitting 3RB12 46; snap-on mounting on 35-mm-standard mounting rail or screw mounting with accessories3RB12 53; 3RB12 57; 3RB12 62: can be directly mounted on the contactor or screw mounting
EMC immunity Conducted interference injection, burst acc. to IEC 61 000-4-4: 2 kV (corresponds to severity 3)
Conducted interference injection, surge acc. to IEC 61 000-4-5: 2 kV (corresponds to severity 3)
Electrostatic dischargeacc. to IEC 61 000-4-2: 8 kV (corresponds to severity 3)
Field-generated interference injectionacc. to IEC 61 000-4-3: 10 V/m (corresponds to severity 3)
EMC emitted interference Limit-value class B acc. to EN 55 011
Main circuitRated insulation voltage Ui (pollution degree 3)
3RB12 46: 690 V for blank/unisolated conductors; 1000 V for isolated conductors3RB12 53, 3RB12 57, 3RB12 62: 1000 V
Rated operational voltage Ue 3RB12 46: 690 V; 3RB12 53, 3RB12 57, 3RB12 62: 1000 V general
Rated impulse withstand voltage Uimp 3RB12 46: 6 kV3RB12 53, 3RB12 57, 3RB12 62: 8 kV
Rated frequency and type of current 50/60 Hz; 3-phase and for protection of single-phase motors (see circuit diagrams)
Short-circuit protection • with fuses 1)
• with circuit-breaker 2)
Diameter of the cut-outs(≤100 A max. Ie)
10 mm (devices with max. current setting Ie≤25 A); 15 mm (devices with max. current setting Ie100 A ); (devices with max. current setting Ie >100 A:mounting with connecting bars)
Busbar connection (>100 A max. Ie) 3RB12 53 3RB12 57 3RB12 62
tightening torque Nm M 8: 10 to 14 M 10: 14 to 24 M 10: 14 to 24; M 12: 20 to 35
finely stranded with cable lug mm2 35 to 95 50 to 240 50 to 240
stranded with cable lug mm2 50 to 120 70 to 240 185 to 240
SIRIUS 3R
1) See table on page 4/27.2) See Part 5.
3RB12 Solid-State Overload Relays
4/26 Siemens NS K · 2000
CLASS 5 to CLASS 30
Technical data
Auxiliary circuit/control circuitAuxiliary contacts (electrically isolated) 1 NO/1 NC for overload tripping due to current and/or thermistor;
1 NO/1 NC for earth-fault tripping or1 NO/1 NC for overload tripping due to current and/or thermistor and/or earth-fault : 1 NO/1 NC for overload warning
Recovery time 5 (fixed), after tripping due to overcurrent. After tripping by the ther-mistor as long as the motor temperature has not fallen to 5 K below the operating temperature of the thermistor.
Rated insulation voltage Ui 300 V (pollution degree 3)
Rated impulse withstand voltage Uimp 4 kV
Conventional thermal current 6 A
Rated operational current Switching capacity: AC-15: 6 A/24 V; 6 A/120 V; 3 A/230 V; DC-13: 2 A/24 V; 0.55 A/60 V; 0.25 A/125 V
Rated control supply voltage Us AC 50/60 Hz: 110 V to 120 V; 220 V to 240 V; DC: 24 V
Operating range AC 50/60 Hz: 0.85 to 1.1 x Us, 2 VA; DC 24 V: 0.85 to 1.2 x Us (DIN 19 240), 2 W
Power failure stored-energy time 200 ms
Thermistor protection
(PTC thermistor sensor)
Summated cold resistance: 1.5 kΩ;Response value: 2.7 kΩ to 3.1 kΩ; fall-back value: 1.5 kΩ to 1.65 kΩ
Response time after earth-fault detection External: 200 ms to 500 ms; internal: 500 ms to 1000 ms
Short-circuit protection Fuse links utilization category gL/gG 6 A, fast 10 A; miniature circuit-breaker 1.6 A; C-characteristics
Conductor cross-sectionstightening torque 0.8 Nm to 1.2 Nm
solid 1 x (0.5 mm2 to 4.0 mm2); 2 x (0.5 mm2 to 2.5 mm2)
finely stranded with/without end sleeve 1 x (0.5 mm2 to 2.5 mm2); 2 x (0.5 mm2 to 1.5 mm2)
Analog outputOutput signal 4 to 20 mA
Measurement range 0 to 1.25 · Ie4 mA 0 · Ie
16.8 mA 1.0 · Ie20 mA 1.25 · Ie
Resolution 10 bit (approx. 1/8 %)
SIRIUS 3R
3RB12 Solid-State Overload Relays
4/27Siemens NS K · 2000
CLASS 5 to CLASS 30
Technical data
Sh
ort-
circ
uit
pro
tect
ion
wit
h fu
ses
for
mo
tor
feed
ers
for
sho
rt-c
ircu
it c
urr
ents
up
to 5
0 kA
at
690
Vfo
r 3R
B12
an
d 3
UF
50
Ove
rload
rela
ysC
onta
ctor
CLA
SSFu
se li
nks
3)C
urre
nt s
ettin
g
rang
e5
and
1015
2025
30N
HTy
pe
3NA
NH
Brit
ish
UL-
liste
d
Rat
ed o
per
atio
nal c
urre
nt I
eD
IAZ
ED
Typ
e 5S
BTy
pe
3ND
Sta
ndar
dsfu
ses
AC
-3 in
A a
tN
EO
ZE
D
Typ
e 5S
Efu
ses
Util
izat
ion
cate
gor
y g
l (g
G)
aMB
S88
RK
5Ty
pe
of c
oord
inat
ion
4 )Ty
pe T
(Typ
e)40
0 V
500
V69
0 V
400
V50
0 V
690
V40
0 V
500
V69
0 V
400
V50
0 V
690
V40
0 V
500
V69
0 V
12
22
1.25
to
6.3
A3R
B12
46-1
P3R
T101
56.
35.
04.
06.
35.
04.
06.
35.
04.
06.
35.
04.
06.
35.
04.
035
2020
253U
F50
03R
T101
66.
36.
35.
26.
36.
35.
26.
36.
35.
26.
36.
35.
26.
36.
35.
235
2020
253R
T101
76.
36.
36.
36.
36.
36.
36.
36.
36.
36.
36.
36.
36.
36.
36.
335
2020
25
6.3
to 2
5 A
3RB
1246
-1Q
3RT1
015
7.0
5.0
4.0
7.0
5.0
4.0
7.0
5.0
4.0
7.0
5.0
4.0
7.0
5.0
4.0
3520
2060
3UF5
0 1
3RT1
016
9.0
6.5
5.2
9.0
6.5
5.2
9.0
6.5
5.2
9.0
6.5
5.2
9.0
6.5
5.2
3520
2060
3RT1
017
12.0
9.0
6.3
11.0
9.0
6.3
10.0
9.0
6.3
9.5
9.0
6.3
9.0
9.0
6.3
3520
2060
3RT1
024
12.0
12.0
9.0
12.0
12.0
9.0
12.0
12.0
9.0
12.0
12.0
9.0
12.0
12.0
9.0
6325
2025
703R
T102
517
.017
.013
.017
.017
.013
.016
.016
.013
.015
.015
.013
.014
.014
.013
.063
2520
2570
3RT1
026
25.0
18.0
13.0
18.0
18.0
13.0
16.0
16.0
13.0
15.0
15.0
13.0
14.0
14.0
13.0
100
3520
3510
03R
T103
425
.025
.025
.025
.025
.025
.022
.322
.322
.320
.320
.320
.319
.119
.119
.112
563
5063
100
3RT1
035
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
125
6350
6310
0
25 t
o 1
00 A
3RB
1246
-1E
3RT1
034
32.0
32.0
2025
.525
.520
125
6350
6312
53U
F50
33R
T103
540
.040
.024
33.0
33.0
2429
.429
.424
28.0
28.0
2426
.526
.524
125
6350
6315
03R
T103
650
.050
.024
38.5
38.5
2432
.732
.724
29.4
29.4
2426
.526
.524
160
8050
8020
03R
T104
465
.065
.047
56.0
56.0
4749
.049
.047
45.0
45.0
45.0
41.7
41.7
41.7
250
125
6312
525
03R
T104
580
8058
6161
5853
5353
4747
4745
4545
250
160
8016
025
03R
T104
695
9558
6969
5859
5958
5352
5350
5050
250
160
100
160
350
3TF5
010
010
010
087
8787
7676
7671
7171
6565
6540
022
412
516
017
53T
F51
100
100
100
9797
9790
9090
8383
8340
025
016
020
020
03T
F52
100
100
100
100
100
100
100
100
100
400
250
200
200
200
50 t
o 2
05 A
3RB
1253
-0F
3TF5
0 1 )
110
110
110
8787
8776
7676
7676
7164
6464
400
224
125
160
175
3UF5
0 3
3TF5
1 2 )
140
140
110
111
111
110
9797
9797
9790
8383
8340
025
016
020
020
03T
F52
2 )17
017
017
013
513
513
511
811
811
811
811
810
910
110
110
140
025
020
025
020
03T
F53
205
205
205
162
162
162
143
143
143
143
143
132
122
122
122
400
250
250
250
300
3TF5
419
819
819
817
417
417
417
417
416
114
914
914
940
025
025
025
030
03T
F55
205
205
205
205
205
205
205
205
194
178
178
178
400
250
250
250
300
3TF5
620
520
520
520
540
025
025
025
040
0
125
to 5
00 A
3RB
1257
-0K
3TF5
217
017
017
013
513
513
540
025
020
025
020
03U
F50
43T
F53
2 )20
520
517
016
216
216
214
314
314
314
314
313
240
025
025
031
530
03T
F54
2 )25
025
025
019
819
819
817
417
417
417
417
416
114
914
914
950
040
025
035
530
03T
F55
2 )30
030
025
023
823
823
820
820
820
820
820
819
417
817
817
850
040
031
540
030
03T
F56
2 )40
040
040
031
831
831
827
827
827
827
827
825
923
823
823
880
050
040
045
040
03T
F57
2 )47
547
540
037
837
837
833
233
233
233
233
230
728
428
428
480
050
063
050
040
03T
F68
500
500
500
500
500
500
440
440
440
440
440
408
376
376
376
800
500
630
500
1200
3TF6
950
050
050
050
050
050
050
050
050
080
050
063
050
0C
LAS
S L
200
to 8
20 A
3RB
1262
-0L
3TF6
8 2 )
630
630
630
502
502
502
440
440
440
440
440
408
376
376
376
1000
500
630
500
1200
3UF5
0 5
3TF6
9 2 )
820
820
820
662
662
662
572
572
572
572
572
531
500
500
500
1250
630
630
630
CLA
SS
L
1)M
ount
ing
of c
onta
ctor
is p
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SIRIUS 3R
CLASS 5 to CLASS 303RB12 Solid-State Overload Relays
4/28 Siemens NS K · 2000
Description
Functions• Tripping in the event of over-
load, current unbalance, phase failure or blocked rotor.
• Full motor protection by con-nection of a thermistor (PTC sensor circuit in the motor coil) possible; it is deactivated by the prefitted wire jumper A (see front view). The monitor-ing system of the termistor is fail-safe, i. e. a wire break causes tripping.
• Earth-fault monitoring- internal for motors with 3-
lead connection (earth-fault detection in the event of fault currents > 30 % of the cur-rent setting Ie )
- The units with internal earth-fault detection are not suit-able for operation in star/delta combinations.
- external for motors with 3 and 4-lead connection by connection of a 3UL22 0 . –. A summation current trans-
former (reliable earth-fault detection in the event of fault currents of 0.3 A, 0.5 A and 1 A). These values are appli-cable for sinusoidal currents of 50/60 Hz
• Overload warning above- 1.15 × Ie with balanced load- 0.85 × Ie with unbalanced
load- display by flashing “over-
load” LED at the unit or ex-ternal via 1 NO/1 NC (ac-cording to the version of the unit)
• Electrically isolated auxiliary contactFunction according to version:- 1 NO/1 NC for overload trip-
ping by current and/or ther-mistor1 NO/1 NC for earth-fault tripping
- 1 NO/1 NC for overload trip-ping by current and/or ther-mistor and earth fault 1 NO/1 NC for overload warning
• Versions of the unit with monostable or bistable func-tioning of the output relays
• 3 LED displays (“Ready”,“Ground Fault”, “Overload”)
• Combined TEST-/RESET-button with function test
• Remote and automatic RESET by means of external wiring is possible (an automatic RESET in the event of tripping by earth-fault has no effect)
• Selectable trip class (time-lag class): CLASS 5/10/15/20/25/30
• Large ranges of the set cur-rent Ie
• High tripping precision• Current detection immune to
harmonics• Temperature range from
–25 °C to +70 °C• Self-monitoring, i.e. the units
trips in the event of an internal fault
• Versions of the unit for control supply voltages of 24 V DC, 110 to 120 V AC, 220 to 240 V AC.
Operation on frequency convertersThe 3RB12 solid-state relays are suitable for operation on fre-quency converters.
3RB12 overload relays with analog output
With the aid of the micropro-cessor, the measured motor current is converted to an ana-log DC 4 mA to 20 mA output signal. The maximum current of the 3 phases is always output. An output signal of 20 mA cor-responds to 1.25 times the set value. The current setting of the 3RB12 defines calculation of the absolute current value.
With the output signal, moving coil instruments with a 4 mA to 20 mA input can be controlled (final scale value for all sizes 125 %) or analog inputs of pro-grammable logic controllers can be fed.With an analog AS-Interface module (current), the current values can be transferred via AS-Interface.
3RB12 overload relays (front view)
1 Terminals for control supply volt-age
2 Green LED “Ready”3 Red LED “Ground Fault”4 Red LED “Overload”5 TEST-/RESET button6 1 NO/1 NC for overload/
thermistor tripping or1 NO/1 NC for overload/thermistor/earth-fault tripping
7 Thermistor terminals8 Terminals for external summation
current transformer9 Terminals for remote or
automatic RESET10 Rotary button for current setting11 CLASS selector rotary knob12 1 NO/1 NC for earth-fault tripping
or 1 NO/1 NC for overload warn-ing
13 Analog output 4 ... 20 mA
PTB Test ReportThe 3RB12 solid-state overload relay complies with the specifi-cations for the overload protec-tion of flameproof motors of protection type “increased safety” EEx e EN 50 019/DIN VDE 0165, DIN VDE 0170/171 and PTB test regulations.For overload relays with DC operation, the electrical isola-tion must be assured by means of a battery supply or a safety transformer according to DIN VDE 0551.With 3RB12 . .-. . . .1 units (no change of the switching state of the auxiliary contacts in the case of failure of the control suply voltage) for protection of EEx e electrical motors, sepa-rate monitoring of the control supply voltage is recom-mended.PTB Test Report No. 3.53-3907/96
9 5 9 6 9 7 9 8 0 5 0 6 0 7 0 8
N CN C
5
1 0
1 52 0 2 5
3 0
C L A S S
2 53 0
4 0
5 06 07 0 8 0 9 0
1 0 0
A
R e a d y
G n d F a u l t
O v e r l o a d
T E S T /R E S E T
S I E M E N S
A 1 A 2 T 1 T 2 / C 1 C 2 Y 1 Y 2
3 R B 1 2
N S K - 7 0 3 5 d
2
3
4
5
6
78
9
1 0
1 1
1 2
1
1 3
R
Tripping characteristicsThe time-current characteristic for 3-pole symmetric loading shows the dependence of the tripping time from a cold state on multiples of the current set-ting.If the unit is pre-loaded with 100 % of the current setting, the tripping times are shortened to approx. 30 %.In the event of 2-pole loading (failure of a phase) or a current unbalance > 40 % of the current setting, the 2-pole characteris-tic applies.
Time-current characteristic for 3-pole loading
Time-current characteristic for 2-pole loading
1 2 01 0 0
5 0
2 0
1 0
5
2
15 0
2 0
1 0
5
2
1 2 5 1 0 x I e
min
s
N S K - 7 0 3 6 c
0 , 6
C L A S S 3 0 2 5 2 0
1 5 1 0C L A S S 5
A
Tripping time
T r i p p i n g c u r r e n t ( a v e r a g e )
1 2 01 0 0
5 0
2 0
1 0
5
2
15 0
2 0
1 0
5
2
1 2 5 1 0 x I e
min
s
N S K - 7 0 3 7 c
0 , 6
C L A S S 3 0 2 5 2 0
1 5 1 0C L A S S 5
A
Tripping time
T r i p p i n g c u r r e n t ( a v e r a g e )
SIRIUS 3R
3RB12 Solid-State Overload Relays
4/29Siemens NS K · 2000
CLASS 5 to CLASS 30
Description
Mode of operation and controlThe currently flowing motor cur-rent is detected in each phase via current transformers and continuously monitored by a microprocessor.If an overload > 110 % of the current Ie occurs which is set with the rotary knob on the front of the unit, if there is a current unbalance > 40 % of Ie or if a phase-failure occurs, tripping is initiated by the switching of two auxiliary contacts (1 NO/1 NC) after expiry of the tripping time which is set with the six-step ro-tary switch (CLASS 5/10/15/20/25/30 → see tripping characteristics).Resetting, either by pressing the TEST/RESET button on the unit or by remote or automatic RESET, is possible after the re-covery time of 5 min has elapsed.Tripping due to responding of the thermistor sensor occurs via the same auxiliary contacts but without a time delay. Here, re-setting is not possible until the temperature in the motor coil has fallen to 5 K below the oper-ating temperature of the ther-mistor.In the event of an earth-fault, the unit trips without a time delay. According to the version of the unit, this may happen via a sep-arate output (1 NO/1 NC). Re-setting of the unit is possible in this case without a time delay/without elapsing of a recovery time.A test of the unit’s functions, namely current detection, the thermistor and earth-fault input, and of the tripping functions of the auxiliary contacts can be ini-tiated by pressing the TEST/RE-SET button. The test of the unit’s functions can also be carried out during operation (LED sig-nals).A self-monitoring feature also causes the unit to trip when an internal fault occurs. In this case resetting is not possible.
SpecificationsIEC 60 947-4-1/DIN VDE 0660 Part 102; IEC 60 947-5-1/DIN VDE 0680 Part 200; IEC 60 801-2, -3, -4, -5; UL 508/CSA C 22.2.
Overload relays are used for protecting electrical equipment against overheating (3-phase motors, transformers, ...). This can be caused by overloading, unbalanced current input, phase failure (main leads) or a blocked rotor.Solid-state overload relays pro-vide highly-sophisticated mo-tor-protection such as• high precision of the tripping
characteristic with a tolerance of < ±10 %
• fine adaptation to normal or heavy starting duty by means of an adjustable trip class (CLASS 5/10/15/20/25/30)
• independence from outside influence such as shocks, dif-ferent cable cross-sections, temperature fluctuations, ag-gressive surroundings or age-ing
• a defined recovery time (here 5 min).
Function in the event of control supply voltage failure
In the case of a long-time failure of the control supply voltage (> 0.2 s), the output relays react in different ways depending on the version: monostable or bistable.
Function of the output relays Monostable Bistable
at: 3RB12 . .-. . . . 0 3RB12 . .-. . . . 1
Failure of the control supply voltage Unit trips No change in the switching state of the auxiliary contacts
Return of the control supply voltage without trip
Unit resets No change in the switching state of the auxiliary contacts
Return of the control supply voltage after trip
Unit remains trippedResetting: In the event of overload tripping, after 5 min;in the event of thermistor tripping when 5 K below the operating temperature; in the event of earth-fault tripping, immediately
Unit remains trippedResetting: In the event of overload tripping, after 5 min;in the event of thermistor tripping when 5 K below the operating temperature; in the event of earth-fault tripping, immediately
Mono- and bistable 3RB12 solid-state overload relays
N S K - 8 4 7 8
tC o n t r o lv o l t a g e
B i s t a b l e
M o n o s t a b l e
B i s t a b l e
M o n o s t a b l e
M o t o r t o o h o t :u n i t t r i p s
C o n t r o l v o l t a g ef a i l u r e
C o n t r o l v o l t a g er e t u r n s
M a n u a l / a u t o r e s e t a f t e r 5 m i n . o r
a f t e r t h e t h e r m i s t o r h a s c o o l e d
C o n t a c t o p e n e d
C o n t a c t c l o s e d
Ö
S
Ö
S
Ö
S
Ö
S
01
Control voltage failure
with prior tripping
by thermistor
or overcurrent
A
Control voltage failure
without prior tripping
by thermistor
or overcurrent
ApplicationThe 3RB12 electronic overload relays enable protection of elec-trical equipment and installa-tions with three different protec-tive mechanisms in one unit: • overload protection with per-
manent monitoring of the indi-vidual currents in the motor leads
• thermistor motor protection with evaluation of a PTC ther-mistor sensor circuit
• earth-fault protection:internalIn the event of a motor current between 0.3 times and twice the current setting, the unit trips at an earth-fault current that amounts to 30 % of the current setting.In the event of a motor current between twice and eight times the current setting, the unit trips at an earth-fault current that amounts to 15 % of the motor current.The response delay is 0.5 to 1 s.
external for motors with 3 and 4-lead connection by connection of a 3UL22 0 . – . A summation current transformer (reliable earth-fault detection in the event of fault currents of 0.3 A, 0.5 A and 1 A).
Thermistor protection (full motor protection) is provided by a PTC temperature sensor (e. g. for motors whose stator is the criti-cal component, motors with long starting and breaking pro-cedures, motors with impeded cooling or with high ambient temperatures).Additional evaluation equip-ment is not needed. Less space and wiring are therefore re-quired.
SIRIUS 3R
CLASS 5 to CLASS 303RB12 Solid-State Overload Relays
4/30 Siemens NS K · 2000
Description
The current transformers for all sizes of the 3RB12 electronic overload relays are already inte-grated in the housing.Units with current setting ranges < 100 A (overall width 70 mm) are designed for single installa-tion due to the push-through system used.With this system, the main power leads for rated motor cur-rents of 1.25 A to 100 A are sim-ply pushed through the current transformer integrated in the compact unit (“first loop”).
Design and mounting
Additional installation work and power losses at the transfer re-sistor of the terminal points which are otherwise needed are thus avoided.For rated motor currents IN smaller than 1.25 A, the motor leads in each phase can be taken through the loop-through holes several times (n times). The current setting Ie of the unit can then be calculated to Ie = n × IN (e.g.: IN = 0.5 A; n = 3; Ie = 3 × 0.5 A = 1.5 A).n = 5 is recommended as the practical upper limit.
Units with 70 mm overall width are either snapped onto a 35 mm standard mounting rail in accordance with EN 50 022 or are screwed onto a mounting plate by means of push-in lugs which are available as accesso-ries.For current setting ranges > 50 A to 820 A (overall width: 120 mm, 145 mm and 230 mm) the 3RB12 electronic overload relays can be directly mounted on the contactors via connect-ing rails.
The screw mounting for these units is integrated in the hous-ing.For 3RB12 53 units (overall width: 120 mm), a baseplate is also available for snap-on mounting on a 75-mm mounting rail.
Internal circuit diagrams Connection diagrams
3RB12 overload relays standard version Protection of single-phase motors
3RB12 46- . . . 0., - . . . 1 .;
(Only in the case of units without internal earth-fault detection)
3RB12 53- . . . 0., - . . . 1 .3RB12 57- . . . 0., - . . . 1 .3RB12 62- . . . 0., - . . . 1 .
N S K - 8 4 7 7 a
L 1L 2L 3N
3 ~M
F 2 F 3 F 4
G r o u n d F a u l t
C L A S S5 , 1 0 , 1 5 , 2 0 , 2 5 , 3 0
3 R B 1 2
H 1 H 1H 1
Y 1Y 2Y 1Y 2
A u t o m a t i cR e s e t
R e m o t eR e s e t
A 1
A 2K 1 E
9 6 9 8 0 6 0 8642T 1 T 2 T 3 T 1
T 2 /C 1 Y 2 Y 1
R e a d y G r o u n dF a u l t
O v e r l o a d
K 1 O v e r l o a d
K 2 G r o u n dF a u l t
9 5 9 7 0 5 0 7A 1A 2C 2T 2 /C 1531
L 1 L 2 L 3F 1T e s t /R e s e t
531
642K 1 E
Z 2
Z 1
F 5
S 1 A
S 1 E K 1 E
3 U L 2 2
ϑ
ϑ
LN
M1 ~
NSK-7013b
L 1 L 2 L 3
T 1 T 2 T 3
3 R B 1 2
LN
M1 ~
NSK-7014b
L 1 L 2 L 3
T 1 T 2 T 3
3 R B 1 2
SIRIUS 3R
3UA6 Thermally Delayed Overload Relays
4/31Siemens NS K · 2000
up to 205 A · CLASS 10
Selection and ordering data3UA6 Thermally Delayed Overload Relays
Overload relays for mounting onto contactor and installation as a single unit• for snap-on and screw mounting
snapping onto 35 mm stand. mounting rail acc. to EN 50 022
1) From setting range 135 to 180 A, installation as a single unit is required (heat dissipation).
For contactor Overload relays Weight
Current setting range Order No. approx.
A Preferred type kg
3TF50 55 to 80 3UA60 01-2H 0.763 to 90 3UA60 01-2W80 to 110 3UA60 01-2X90 to 120 3UA60 01-3H
110 to 135 3UA60 01-3J
3TF51 55 to 80 3UA61 01-2H 0.763 to 90 3UA61 01-2W80 to 110 3UA61 01-2X90 to 120 3UA61 01-3H
110 to 135 3UA61 01-3J120 to150 3UA61 01-3K
3TF52 55 to 80 3UA62 01-2H 0.763 to 90 3UA62 01-2W80 to 110 3UA62 01-2X90 to 120 3UA62 01-3H
110 to 135 3UA62 01-3J120 to 150 3UA62 01-3K135 to 1601) 3UA62 01-3L
3TF53 170 to 2051) 3UA62 01-3N 0.7
Thermally delayed overload relays
3UA60, 3UA61 and 3UA62• STOP button• Test function• Integrated sealable cover• SIRIUS 3RU19 accessories can be used• Trip class CLASS 10• Auxiliary contacts 1 NO + 1 NC• Manual/automatic RESET• Switch position indicator• Phase failure sensitivity
up to 820 A · CLASS 10 and 5 up to 30 s3UA6 and 3RB12 Overload Relays
4/32 Siemens NS K · 2000
Selection and ordering data
3RB12 solid-state overload relays with• Current transformer• Auxiliary contacts 2 NO + 2 NC• Trip classes CLASS 5 to 30, changeable• Manual/automatic/remote RESET• Phase failure sensitivity• Test functions and 3 LEDs• Rated control supply voltage 50/60 Hz, 230 VSee 3RB12 for further information and versions.
3UA6 and 3RB12 Overload Relays
3UA66 and 3UA68 overload relays with• Current transformer• Auxiliary contacts• Trip class CLASS 10 A• Manual/automatic RESET• Switch position indicator• Phase failure sensitivity
Overload relays for installing as a single unit
3UA66 and 3UA68 overload relays with snap-on mounting onto 75 mm standard mounting rail acc. to EN 50 023
3RB12 overload relays for screw mounting or for direct mounting to the 3TF5 and 3TF6 contactors
Overload relays Weight Overload relays Weight
Current setting range Order No. approx. Current setting range Order No. Price approx.
An Obsolescent type
with replacement type
kg A Preferred type kg
80 to 125 3UA66 00-2K 2.5 50 to 205 3RB12 53-0FM00 1125 to 200 3UA66 00-3B 50 to 205 3RB12 53-0FM00160 to 250 3UA66 00-3C 125 to 500 3RB12 57-0KM00 1.9200 to 320 3UA66 00-3D 125 to 500 3RB12 57-0KM00250 to 400 3UA66 00-3E 125 to 500 3RB12 57-0KM00
320 to 500 n 3UA68 00-3F 3 125 to 500 3RB12 57-0KM00 1.9400 to 630 n 3UA68 00-3G 200 to 820 3RB12 62-0LM00 3.2
3UA Thermally Delayed Overload Relays
4/33Siemens NS K · 2000
CLASS 10
Accessories3UA Thermally Delayed Overload Relays
Design For type Order No. Price Weight approx.
Pack.
1 unit kg Unit
Terminal covers3TX7 506-0A
3UX1 120/3UX1 121
3TX6 5.6
For protection against inadvertent contactin acc. with DIN VDE 0106 Part 100
• For overload relays with box terminals(1 item required per connection side)
3UA60 3TX7 506-0A 0.044 10
• For busbar terminals with installation as a single unit(1 item required per connection side)
3UA66. 3UA68 3TX7 536-0A 0.108 2
• For screw connection between contactor andoverload relays without box terminals,cover to be mounted to contactor (1 item required per combination)
3TF50/3UA603TF51/3UA613TF52/3UA62
3TX7 506-0B 0.023 5
• For screw connection beween contactor M 6and overload relay
3TF50/3UA60 3UX1 120 0.05 3
M 8 3TF51/3UA61,3TF52/3UA62
3UX1 121
• For busbar terminals with installation as a single unitM 6 (1 set = 6 items)
3UA60without box terminal
3TX6 506-3B 0.1 1 pack-ing
M 8 3UA61/623UA66 to 200 A
3TX6 526-3B
M 10 3UA66/68 3TX6 546-3B
Terminal block3UX1 424 • For installing as a single unit 3UA60 3UX1 424 0.2 10
Links3UX1 21. • For connection to contactor/starter
3TF51, 3TF52, 3TB52 3UA61, 3UA62 3UX1 221 0.085 33TF53, 3TF54, 3TB54, 3TD54, 3TE54 up to 200 A 3UA62, 3UA66 3UX1 210 0.1 33TF54, 3TB54, 3TD54, 3TE54, 3TF55, up to 400 A 1)3TF56, 3TB56, 3TD56, 3TE56, 3TF57
3UA66, 3UA68 3UX1 211 0.33 3
3TF57, 3TF68, 3TB58, 3TD68, 3TE68 up to 630 A 3UA68 3UX1 218 0.84 3
Mechanical RESET3RU19 00-1A Resetting plunger, holder and funnel 3RU19 00-1A 0.02 1 set
Suitable pushbutton IP 65 ∅ 22 mm 3UA60 01 3SB10 00-0AH01 0.01 10Holder for pushbutton 3UA61 01 3SB19 02-1AC 0.02 100 Indicator label with inscription RESET
with push button,holder and indicator label
3UA62 01 3SB19 01-4EM 20
Cable release with support for RESET3RU19 00-1. (a bore of 6.5 mm dia. is required Length 400 mm 3UA60 01 3RU19 00-1B 0.07 1 set
in the switchboard Length 600 mm 3UA61 01 3RU19 00-1Cmax. switchboard thickness 8 mm) 3UA62 01
Module for remote RESET, electrical3RU19 00-2A.71 Operating range 0.85 to 1.1 x Us 3UA60 01
Power consumption AC 120 VA, DC 70 W 3UA61 01ON period 0.2 s to 4 s 3UA62 01
AC/DC 24 V to 30 V 3RU19 00-2AB71 0.06 1AC/DC 110 V to 127 V 3RU19 00-2AF71AC/DC 220 V to 250 V 3RU19 00-2AM71
1) Not for 3UA6 600-2U/-3B
CLASS 10 3UA Thermally Delayed Overload Relays
Technical dataaccording to IEC 60 947-4-1
4/34 Siemens NS K · 2000
General data
Type 3UA60 01- . ./ 3UA61 01-..3UA62 01-..
3UA66 3UA68
Trip class 10 10 10 A 10 A
Phase failure sensitivity bydifferential shutter
yes
Adjustable to automatic reset yes
RESET button with trip-free feature yes
STOP button yes no
Test function yes
Sealable cover integrated Accessories
Permissible ambient temperature °C –20 to +60 –25 to +55
Shock resistance g/ms 8/10
Main circuit
Rated insulation voltage Ui(pollution degree 3)
V 1000
Rated impulse withstand voltage kV 8
Type of current, frequency range DC, AC up to 400 Hz AC 50 to 400 Hz
Conductor cross-sections Current setting range (<= 200 A / > 200 A )
Terminal screw M 6 M 8 M 8/M 10 M 10Solid or stranded mm2 2 x 25 to 70 2 x 50 to 120 185/240 2x240
Finely stranded with end sleeve mm2 25 to 50 25 to 95 – –
Flat bars mm – 20 x 3 20x3/2x30x5 2x30x5
Tightening torque Nm 6 to 8 10 to 14 10 to 14 14 to 24lb. in 52 to 60 89 to 124 89 to 124/ 124 to 210
Nm 14 to 24
lb. in 124 to 210
Power losses per conducting path (max.)• at lowest value of setting range W 5 5 4 (5) 6 (9)
• at highest value of setting range W 7 8 10 (12) 15 (22)
3UA Thermally Delayed Overload Relays
4/35Siemens NS K · 2000
CLASS 10Technical data
according to IEC 60 947-4-1
Auxiliary circuit
Type 3UA60 01- . ./ 3UA61 01-..3UA62 01-..
3UA66 3UA68
Auxiliary contacts 1 NO + 1 NC
Conductor cross-sectionsTerminal screw M 3 M 3.5Solid or stranded mm2 2 x (0.5 to 1.5); 2 x (0.75 to 2.5) 2 x (0.5 to 1); 2 x (1 to 2.5)Finely stranded with end sleeve mm2 2 x (0.5 to 1.5); 2 x (0.75 to 2.5) 2 x (0.5 to 1); 2 x (0.75 to 2.5)Tightening torque Nm 0.8 to 1.2 0.8 to 1.4
lb. in 7 to 10.3 7 to 12
Rated insulation voltage Ui(pollution degree 3)
V 690 -
• NC V - 690
• NO and NC with unequal potential
V - 400
• NO and NC connected as changeover contact
V - 690
Rated impulsewithstand voltage Uimp
kV 6
Switching capacity
NC at AC. AC-14/AC-15 • Rated operational current Ie at Ue:- 24 V A 4 2- 60 V A - 1.5- 125 V A - 1.25- 230 V A 3 1.15- 400 V A 1.5 1.1- 500 V A - 1- 600 V A 0.6 -- 690 V - 0.8
NO at AC. AC-14/AC-15 Rated operational current Ie at Ue:- 24 V A 2.2 2- 60 V A - 1.5- 125 V A - 1.25- 230 V A 1.5 1.15- 400 V A 0.8 1.1- 500 V A - 1- 600 V A 0.6 -- 690 V A - 0.8
NC/NO at DC, DC-13 Rated operational current Ie at Ue:- 24 V A 1 2- 60 V A - 0.5- 110 V A 0.15 0.3- 220 V A 0.1 0.2
Conventional thermal current Ith A 6Contact reliability Suitable for PLC;
17 V, 5 mAyes
Short-circuit protection -
Fuse links Utilization category gL/gG A 6fast A 10
Miniature circuit-breaker C-characteristics A 6 3
s-, u-, U-ratingsRated voltage AC V - 400 630
Switching capacity B 600, R 300
NS
1-53
29N
S1-
5330
NS
1-53
31
Box terminals block for installing as a single unitType 3UX1 424
For overload relays 3UA60
Conductor cross-sectionsTerminal screw M 6Solid or stranded mm2 2x25 to 70Finely stranded with end sleeve mm2 2x25 to 50
Trip classes of thermal, delayed magnetic orsolid-state overload relays – excerpt from IEC 60947-4-1Trip class Tripping time tA in seconds
at 7.2 x Ie from cold state10A 2 < tA ≤ 1010 4 < tA ≤ 1020 6 < tA ≤ 2030 9 < tA ≤ 30
3UA Thermally Delayed Overload Relays
4/36 Siemens NS K · 2000
CLASS 10 Technical data according to IEC 60 947-4-1and DIN VDE 0660 Part 102
Short-circuit protection with fuses for motor feederswith short-circuit currents up to 50 kA at 690 V1), 50/60 Hz
See Parts 2 and 5 for details of short-circuit protection with circuit-breakers, fuseless motor feeders and device combinations for fitting on busbars.
1) Voltage tolerance +5%.2) Coordination of short-circuit equipment according to IEC 60947-4-1/DIN VDE 0660 Part 102:
Type of coordination “1”: The contactor or starter must not endanger persons or the installationin the event of a short-circuit. They do not need to be suitable for further operation without repair and the renewal of parts.
Type of coordination “2”: The contactor or starter must not endanger persons or the installationin the event of a short-circuit and must be suitable for further use. There is a danger of contact welding.
3) Applies to 3TB contactors.
Overload relays Permissible short-circuit fuses for motor startersconsisting of overload relay and contactor, contactor assembly
Type Fuse linksNH Type 3NA NH British u-listedDIAZED Type 5SB Type 3ND standards fusesNEOZED Type 5SE fuses CLASS R K5Utilization category gL/gG
Utilization category aM
BS 88 Type T
Type of coordination 2)
Type of coordination 2)
Type of coordination 2)
Setting range “1” “2” “2” “1” “2”A A A A A A A
3UA60, 3UA61, 3UA62 thermal overload relays 55 to 80 400 160 100 315 160 30063 to 90 400 160 100 315 160 35080 to 110 400 200 125 315 160 40090 to 120 400 224 125 315 200 450
110 to 135 400 224 160 315 200 500120 to 150 400 250 160 315 250 600135 to 160 400 250 160 355 250 600150 to 180 400 250 200 355 250 700170 to 205 400 250 200 355 315 800
3UA66, 3UA68 thermal overload relays 80 to 125 355 224 125 355 224 300
125 to 200 355 224 200 355 224 300160 to 250 500 400 250 500 355 300200 to 320 500 400 315 500 400 300250 to 400 800 500 400 800 450 400320 to 500 800 500 630 800 500 400400 to 630 1000 500
(630) 3)630 1000 500 1200
CLASS L
3UA Thermally Delayed Overload Relays
4/37Siemens NS K · 2000
CLASS 10
Description
Housing reference mark
Permissible mounting position for relays installed as a single units(for mounting onto contactors see Part 3)
Tripping characteristicsThe current-time curves show the relationship between the tripping time from cold state and multiples of the set current IE. When the relay is at operat-ing temperature and carrying 1.0 × IE, the tripping times are reduced to approximately 25 %.
Scale set to - mark
Tripping relay snapped onto a con-tactor (short connecting leads)
Scale set to k mark
Tripping relay installed as a single unit (connecting leads up to 1.5, 2.5 or 4 m long)
k1 k2 k3
l1 l2 l3 NS
K-8
59
2
k1 k2 k3
l1 l2 l3 NS
K-8
59
3
22,5°
NS
2-5
681
b
Specifications
IEC 60 947-4-1/DIN VDE 0660 Part 102.
The overload relays are suitable for use in any climate. They are safe from touch acc. to DIN VDE 0106 Part 100. Depending on the specific arrangement with other equipment, the busbar connection terminals must be protected by 3TX6, 3TX7 or 3UX terminal covers.The overload relays are suitable for use on board ship.
Overload protection of flame-proof motors of protection type “increased safety” EEx e
EN 50 019/DIN VDE 0165, DIN VDE 0170/0171.• Copies of the tripping charac-
teristics for the tripping units and relays with inverse time-lag feature must be available at the point of use (for tripping characteristics refer to the In-structions).
• The tripping units or relays for squirrel cage motors must be selected so that the tripping time with 3-pole loading, inde-cated by the IA/IN curve for the protected motor, does not ex-ceed the locked-rotor time tE-given on the test label of the motor.
• The protective gear for motors must also be capable of giving protection in the event of fail-ure of one phase.
3UA60 013UA61 013UA62 01
3UA66, 3UA68
3UA66, 3UA68,separate mounting of current transformer and tripping relay
95
96
97
98 NS
K-7
59
9
4T2 6T32T1
1L1 3L2 5L3
TE
ST
RE
SE
T
ST
OP
2
9 5
9 6 9 8
N S K - 5 0 5 0 a
L 1
9 7
T 14
L 2
T 26
L 3
T 3
1 3 5R E S E T
A
O F F - T E S T9 5
9 6
9 7
9 8
l 1 l 2 l 3
k 1 k 2 k 3
L 1 L 2 L 31 3 5
2 4 6T 1 T 2 T 3
R E S E T
N S K - 5 0 5 1 b
C u r r e n t t r a n s f o r m e r
T r i p p i n g r e l a y
C o n n e c t i o n l e a d sC u 4 m m 2 , 4 m l o n g
A
O F F - T E S T
DMT Test ReportsTest certificate for operation of explosion protected motors 3UA60 013UA61 013UA62 01in preparation.
Overload relays with current transformers
3UX1 423 tripping relays are used with the 3UA66 and 3UA68 overload relays. They can either be snapped onto the current transformer or be in-stalled as single units.When the tripping relay is mounted separately from the current transformer the con-necting leads should be as fol-lows:• up to 4 m long:
4 mm2 Cu cross-section,• up to 2.5 m long:
2.5 mm2 Cu cross-section,• up to 1.5 m long:
1.5 mm2 Cu cross-section.
The set current (rated current of load) must also be set on the scale against the reference mark:
Tripping curve 3 is applicable to 3-pole loads and curve 2 to 2-pole loads. For single-pole loads, the tripping curves lie be-tween curves 2 and 3. For nor-mal operation, all 3 bimetallic strips of the overload relay must be heated. The 3UA overload relays are suitable for protect-ing motors with phase control.For protecting single-phase or DC-loads, therefore, all three main conducting paths must be connected in series. Tripping curve 3 is then applicable. The release current with a 3-pole symmetrical load is between 105 % and 120 % of the set cur-rent. Typical tripping characteristics
min
s
1 2 01 0 0
5 0
2 0
1 0
5
215 0
2 0
1 05
2
2
3
1 2 5 1 0 x I E
N S 2 - 5 6 8 0 b
Tripping time
T r i p p i n g c u r r e n t ( a v e r a g e )
A
Internal circuit diagrams
for PTC Temperature Sensors3RN1 Thermistor Motor Protection
Selection and ordering data
4/38 Siemens NS K · 2000
3RN1 Thermistor Motor Protection
Recoding table 3UN2 --> 3RN1
Voltage Features 3UN2 Order No. 3UN2 Order No. 3RN1 Features 3RN1 Voltage
AC 24 V Auto 1CO 3UN21 00-0CC7 3RN10 10-1CW00 Auto 1 NO + 1 NC UC 24-240 VAC 48 V Auto 1CO 3UN21 00-0CD7 3RN10 10-1CW00 Auto 1 NO + 1 NC UC 24-240 VAC 110 V Auto 1CO 3UN21 00-0CF7 3RN10 10-1CG00 Auto 1 NO + 1 NC AC 110 VAC 230 V Auto 1CO 3UN21 00-0CN7 3RN10 10-1CM00 Auto 1 NO + 1 NC AC 230 VDC 24 V Auto 1CO 3UN21 00-0CB4 3RN10 10-1CB00 Auto 1 NO + 1 NC DC 24 V
AC 24 V Auto 1 NO + 1 NC 3UN21 00-0AC7 3RN10 10-1CW00 Auto 1 NO + 1 NC UC 24-240 VAC 48 V Auto 1 NO + 1 NC 3UN21 00-0AD7 3RN10 10-1CW00 Auto 1 NO + 1 NC UC 24-240 VAC 110 V Auto 1 NO + 1 NC 3UN21 00-0AF7 3RN10 10-1CG00 Auto 1 NO + 1 NC AC 110 VAC 230 V Auto 1 NO + 1 NC 3UN21 00-0AN7 3RN10 10-1CM00 Auto 1 NO + 1 NC AC 230 VDC 24 V Auto 1 NO + 1 NC 3UN21 00-0AB4 3RN10 10-1CB00 Auto 1 NO + 1 NC DC 24 V
AC 24 V Manual 1 NO + 1 NC 3UN21 10-0AC7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 48 V Manual 1 NO + 1 NC 3UN21 10-0AD7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 110 V Manual 1 NO + 1 NC 3UN21 10-0AF7 3RN10 12-1CK00 Manual 1 NO + 1 NC AC 230 V/ 110 VAC 230 V Manual 1 NO + 1 NC 3UN21 10-0AN7 3RN10 12-1CK00 Manual 1 NO + 1 NC AC 230 V/ 110 VDC 24 V Manual 1 NO + 1 NC 3UN21 10-0AB4 3RN10 12-1CB00 Manual 1 NO + 1 NC DC 24 V
AC 24 V Manual/Auto SCD 1 NO + 1 NC 3UN21 31-0AC7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 48 V Manual/Auto SCD 1 NO + 1 NC 3UN21 31-0AD7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 110 V Manual/Auto SCD 1 NO + 1 NC 3UN21 31-0AF7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 230 V Manual/Auto SCD 1 NO + 1 NC 3UN21 31-0AN7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VDC 24 V Manual/Auto SCD 1 NO + 1 NC 3UN21 31-0AB4 3RN10 13-1BB00 Manual/Auto SCD 2 CO DC 24 V
AC 24 V Manual/Auto SCD 2 NC 3UN21 31-0BC7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 48 V Manual/Auto SCD 2 NC 3UN21 31-0BD7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 110 V Manual/Auto SCD 2 NC 3UN21 31-0BF7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 230 V Manual/Auto SCD 2 NC 3UN21 31-0BN7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VDC 24 V Manual/Auto SCD 2 NC 3UN21 31-0BB4 3RN10 13-1BB00 Manual/Auto SCD 2 CO DC 24 V
AC 24 V Manual/Auto SCD 1 NO + 1 NC, bistable 3UN21 31-1AC7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 48 V Manual/Auto SCD 1 NO + 1 NC, bistable 3UN21 31-1AD7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 110 V Manual/Auto SCD 1 NO + 1 NC, bistable 3UN21 31-1AF7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 230 V Manual/Auto SCD 1 NO + 1 NC, bistable 3UN21 31-1AN7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VDC 24 V Manual/Auto SCD 1 NO + 1 NC, bistable 3UN21 31-1AB4 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 V
AC 24 V Manual/Auto SCD + 2 NC, bistable 3UN21 31-1BC7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 48 V Manual/Auto SCD + 2 NC, bistable 3UN21 31-1BD7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 110 V Manual/Auto SCD + 2 NC, bistable 3UN21 31-1BF7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 230 V Manual/Auto SCD + 2 NC, bistable 3UN21 31-1BN7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VDC 24 V Manual/Auto SCD + 2 NC, bistable 3UN21 31-1BB4 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 V
AC 24 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0EC7 3RN10 22-1DW00 Manual/Auto, warn. off, 1 NO + 1 CO UC 24-240 VAC 48 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0ED7 3RN10 22-1DW00 Manual/Auto, warn. off, 1 NO + 1 CO UC 24-240 VAC 110 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0EF7 3RN10 22-1DW00 Manual/Auto, warn. off, 1 NO + 1 CO UC 24-240 VAC 230 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0EN7 3RN10 22-1DW00 Manual/Auto, warn. off, 1 NO + 1 CO UC 24-240 VDC 24 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0EB4 3RN10 22-1DW00 Manual/Auto, warn. off, 1 NO + 1 CO UC 24-240 VAC 400 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0EQ7 - No substitute; use matching transformer
AC 24 V Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1EC7 - No substitute Possibly use 2 x 3RN10 13-1BW01 AC 48 V Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1ED7 - No substitute Manual/ Auto SCD 2 CO, bistable.AC 110 V Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1EF7 - No substitute At 400 V use matching transformer.AC 230 V Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1EN7 - No substituteDC 24 V Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1EB4 - No substituteAC 400 Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1EQ7 - No substitute
AC 24 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AC7 3RN10 62-1CW00 Manual/Auto 6 sensors 1 NO + 1 NC UC 24-240 VAC 48 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AD7 3RN10 62-1CW00 Manual/Auto 6 sensors 1 NO + 1 NC UC 24-240 VAC 110 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AF7 3RN10 62-1CW00 Manual/Auto 6 sensors 1 NO + 1 NC UC 24-240 VAC 230 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AN7 3RN10 62-1CW00 Manual/Auto 6 sensors 1 NO + 1 NC UC 24-240 VDC 24 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AB4 3RN10 62-1CW00 Manual/Auto 6 sensors 1 NO + 1 NC UC 24-240 VAC 400 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AQ7 - No substitute; use matching transformer
AC 24 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AC7 - No substitute Possibly use 6 x 3RN10 13-1BW01AC 48 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AD7 - No substitute Manual/ Auto SCD 2 CO, bistable.AC 110 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AF7 - No substitute At 400 V use matching transformer.AC 230 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AN7 - No substituteDC 24 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AB4 - No substitute
No substituteAC 400 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AQ7 -
AC 220 V Manual/Auto SCD 2 CO 3UN21 15-0DN2 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 V
Note: The 3RN1 are available as an alternative to the screw connectiontechnique specified here with Cage Clamp connection (see page 6 for notes on Cage Clamp connection).
SCD = Short-circuit detection in the sensor circuit.warn. off = Warning and switching off.Sens. loop = Sensor loop.
3RN1 Thermistor Motor Protection
4/39Siemens NS K · 2000
for PTC Temperature Sensors
Selection and ordering data
Screw and Cage Clamp connectionThermistor motor protection relay for PTCs (Type A)• Monostable version (closed circuit principle),
Unit trips in the event of control supply voltage failure
Screw connection Cage Clamp connection
LED Design RESET Contacts Rated control supplyvoltage
Order No. Price Order No. Price Weight approx.
AC 50-60 HzV 1 unit 1 unit kg
Compact evaluation units, width 22.5 mm1 Terminal A1 is
bridged with the root of the changeover con-tact
Auto 1 CO AC 230 3RN10 00-1AM00 3RN10 00-2AM00 0.120/ AC 110 3RN10 00-1AG00 3RN10 00-2AG00
DC 24 3RN10 00-1AB00 3RN10 00-2AB00
Standard evaluation units, width 22.5 mm3RN10 12-2C... 2 Auto 1 NO +
1 NCUC 24...240 3RN10 10-1CW00 3RN10 10-2CW00 0.133AC 230 3RN10 10-1CM00 3RN10 10-2CM00AC 110 3RN10 10-1CG00 3RN10 10-2CG00DC 24 3RN10 10-1CB00 3RN10 10-2CB00
2 Test button
Reset possible by interrupting the control voltage
Manual 1 NO + 1 NC
AC 230 /110 3RN10 11-1CK00 3RN10 11-2CK00 0.145
DC 24 3RN10 11-1CB00 3RN10 11-2CB00
2 Fault memory Manual/Auto/Remote
1 NO + 1 NC
AC 230 /110 3RN10 12-1CK00 3RN10 12-2CK00 0.145
Test button DC 24 3RN10 12-1CB00 3RN10 12-2CB00
Multifunctional evaluation units, width 22.5 mm3RN10 13-1B... 2 Wire breakage
detection/indica-tion, short-circuit detection/indica-tion
Fault memory
Test button
Manual/Auto/Remote
2 CO UC 24...240 3RN10 13-1BW10 3RN10 13-2BW00 0.145DC 24 3RN10 13-1BB00 3RN10 13-2BB00
Evaluation units for 2 sensor circuits, alarm and trip, width 22.5 mm
3 Fault memory
Test button
Manual/Auto/Remote
1 NO + 1 CO
UC 24...240 3RN10 22-1DW00 3RN10 22-2DW00 0.145
Evaluation units for 6 sensor circuits, multiple motor protection, width 45 mm
. 8 Fault memory
Test button
Manual/Auto/Remote
1 NO + 1 NC
UC 24...240 3RN10 62-1CW00 3RN10 62-2CW00 0.260
Screw and Cage Clamp connectionThermistor motor protection relays for PTCs (Type A)• Bistable version (open circuit principle),
unit doesn’t trip in the event of control supply voltage failure
Screw connection Cage Clamp connection
LED Design RESET Contacts Rated controlsupplyvoltage
Order No. Price Order No. Price Weight approx.
AC 50-60 HzV 1 unit 1 unit kg
Multifunctional evaluation units, width 22.5 mm3RN10 13-1BW01 2 Short-circuit
detection indication
Fault memory
Test button
Manual/Auto/Remote
2 CO UC 24...240 3RN10 13-1BW01 3RN10 13-2BW01 0.145
for PTC Temperature Sensors3RN1 Thermistor Motor Protection
Accessories
4/40 Siemens NS K · 2000
1) See page 4/42.2) Remote reset possible by interrupting the control voltage.3) Applicable for monostable version.
Design For type AccessoriesOrder No. Price
Weight approx.
Pack.
1 unit kg Unit
Sealable capto prevent unauthorized manual reset 3RN1 3RP 1902 5
Connecting links für screw mounting2 units required per thermistor motor protection 3RN1 3RP 1903 5 sets
with 2 units per set
Technical data
General data
Compact units
Standard units Multifunc-tional units
Alarm + trip Multiple motor prot.
Type 3RN10 00 3RN10 10 3RN10 11 3RN10 12 3RN10 13 3RN10 22 3RN10 62
Width mm 22.5 45
Number of connectable sensor circuits 1 2 6
Performance in the event of control voltage failure
1)
Manual RESET no yes
Automatic RESET yes no yes
Remote RESET no yes2) yes
TEST button no yes
Short circuit and wire breakage detection/indi-cation in the sensor circuit, display by LED
no yes3) no
Alarm and trip in one unit no yes no
Tripping unit
Rated insulation voltage Ui(pollution degree 3)
V 300
Permissible ambient temperaturePermissible storage temperature
°C - 25 to + 60- 40 to + 80
EMC tests EN 50 081-2; EN 50 082-2
Requirement class acc. to DIN 19 251 MK 3; DIN V 0801
Degree of protection acc. to DIN 40 050 IP 20
Conductor cross-section
Terminal screws PZ 2• Solid mm2 1 x 0.5 to 4 / 2 x 0.5 to 2.5• Solid, with end sleeves mm2 1 x 0.5 to 2.5 / 2 x 0.5 to 1.5• Tightening torque Nm 0.9 to 1.2
Cage Clamp connection• Solid, with end sleeves mm2 2 x 0.5 to 1• Solid, without end sleeves mm2 2 x 0.5 to 1.5• AWG conductor connections, solid or stranded AWG 2 x (24 to 16)
Sensor circuit
Circuit burden at RF ≤ 1.5 kΩ mW ≤5
Sensor circuit voltage at RF ≤ 1.5 kΩ V ≤2
Response temperature(determined by sensor)
°C 60 to 180
Coupling time(determined by sensor installed)
s approx. 5 s
Total cold resistance RF(for each sensor loop)
kΩ ≤ 1.5
Response value kΩ 3.4 to 3.8
Fall-back value kΩ 1.5 to 1.65
Response tolerance °C ±6
3RN1 Thermistor Motor Protection
4/41Siemens NS K · 2000
for PTC Temperature Sensors
Technical data
Function diagrams
General data
Compact units
Standardunits
Multifunc-tional units
Alarm + trip Multiple motor prot.
Type 3RN10 00 3RN10 10 3RN10 11 3RN10 12 3RN10 13 3RN10 22 3RN10 62
Control circuitRated control supply voltage Us
1)
Operating range
• AC 0.85 ... 1.1 x Us
• UC 0.85 ... 1.1 x Us
• DC 0.85 ... 1.2 x Us
Rated power
• AC < 2 W
• UC < 2 W
• DC < 2 W
Auxiliary circuitConventional thermal current Ith 5
Rated operational current Ie
• AC-15 240 V A 3
• DC-13 24 V A 1 2 1 2) 1 2
Short-circuit protection to Alpha/Lovag
Utilization category gL/gG A 6
s- and u-rated data, control circuitRated control voltage 50/60 Hz
• AC same as Us
• DC same as Us
Switching capacity R 300/B 300
A1/A2
T1/T2RESET(Y1/Y2)
LED Tripped
96
9808
0605 95
NSK-1228
38001500
3RN10 13-...10
A1/A2
T1/T2
LED Tripped
96
98
9895
NSK-1226
979695
98979695
38001500
3RN10 00/3RN10 10(AUTO-RESET) A1/A2
T1/T2RESET(Y1/Y2)
LED TrippedNSK-1229
98979695
98979695
38001500
3RN10 11
A1/A23800
T1/T2RESET(Y1/Y2)
LED Tripped
96
9808
0605 95
NSK-1227
1500
3RN10 13-...01(bistable)
A1/A2
T1/T2RESET(Y1/Y2)
LED Tripped
NSK-1230
96
9895
979695
98979695
98
38001500
3RN10 12/3RN 1022/3RN10 62(Non-resetting on voltage failure)
2T1/T2
LED Alarm
08
NSK-1231a
07
0807
38001500
Only 3RN10 22
1) See selection and ordering data, page 4/39.2) In the case of RN10 13-1BW01 (bistable output relay) 2 A.
V See notes on page 4/42.
for PTC Temperature Sensors3RN1 Thermistor Motor Protection
4/42 Siemens NS K · 2000
Description
SpecificationsThe tripping units are suitable for use in any climate and safe from touch acc. to DIN VDE 0106 Part 100.The 3RN1 tripping units comply with basic standard EN 50 081-2; EN 50 082-2 “Electromag-netic Compatibility of Measur-ing and Control Equipment in In-dustrial Process Engineering” and DIN VDE 0660 Parts 302 and 303; IEC 60 034-11-2 Sec-tion 1 and 2 “Thermal Machine Protection for Rotating Electrical Machines, Temperature Sen-sors and Tripping Units” and “Thermistor Temperature Sen-sor and Tripping Units”.The terminal designation of the auxiliary contacts is in accor-dance with EN 50 005.
Application3RN1 thermistor motor protec-tion tripping units are thermal protection devices which, in conjunction with PTC ther-mistors, are suitable for the tem-perature monitoring of electrical drives, transformer windings, oils, bearings, air etc.
Mode of operationThe 3RN1 tripping units work according to the principle of the closed-circuit current and thus are self-monitoring in the event of wire breakage. A short-time voltage failure of less than 200 ms (in the case of wide volt-age units < 100 ms) does not al-ter the state of the auxiliary con-tacts. The multifunctional evaluation unit 3RN10 13 is also fitted with a short-circuit detec-tion feature in the sensor circuit. In the event of a short-circuit in the sensor circuit (resistance in the sensor circuit < 20 Ω), the unit trips. In the tripping units, the control circuit and the sen-sor circuit are electrically iso-lated from each other when the control voltage is AC (DC con-trol supply voltage: no electrical isolation).
1) See page 6 for notes onCage Clamp connection.
3RN10 00 compact tripping unit The compact unit features a red TRIPPED LED and one change-over contact.Reset after tripping is automatic after the thermistors have cooled down. The root of the changeover contact is con-nected to the control voltage (95 with A1 terminal). This unit is particulary suitable in circuits in which control and signalling circuits have the same potential, e. g. in local switchboxes.
Standard tripping unitThe standard units feature two LEDs (READY and TRIPPED) and also 1 NO and 1 NC for switching off and signalling. They are obtainable with auto-matic RESET (3RN10 10), man-ual RESET (3RN10 11) or man-ual/automatic and remote RESET (3RN10 12). The 3RN10 12 is non-resetting in the event of voltage failure and so, in the event of a control voltage failure any previous tripping is stored.
3RN10 13 multifunctional trip-ping unit With the 3RN10 13 thermistor motor protection tripping units, the sensor circuit is monitored for short-circuiting as well. Trip-ping in the event of a short-cir-cuit is indicated by a flickering red LED. The monostable de-vices are additionally equipped with a wire-break detection and indication for the sensor circuit, which is indicated by flashing of the red LED.The 3RN10 13 tripping unit is equipped with manual, remote and automatic RESET functions. With the TEST/RESET button, the tripping unit is reset by hand.
A remote RESET is made possi-ble by connecting an external pushbutton to the Y1, Y2 termi-nals. If the Y1, Y2 terminals are jumpered, tripping is followed by automatic RESET.
Tripping unit “Alarm and Trip” 3RN10 22Two sensor circuits, each of which affects one output relay, can be connected to a 3RN10 22 tripping unit. The use of tem-perature sensors with different rated operating temperatures TNF make the functions “Alarm” and “Trip” possible. A response of the sensor circuit for “Alarm” is signalled by a yellow LED and for “ Trip” by a red LED.The sensor circuits have differ-ent resetting functions:• “Alarm” (terminals 2T1, T2) ex-
clusively automatic RESET• “Switch off” (terminals 1T1,
T2), can be changed from manual RESET to automatic RESET by jumpering of termi-nals Y1, Y2. Remote RESET is made possible by connecting an external pushbutton.
Tripping unit “Multiple motor protection” 3RN10 62Up to six sensor circuits, all of which affect the output relay, can be connected to the 3RN10 62 tripping unit. Simulta-neous protection of up to 6 mo-tors is an advantage when group drives are used (e.g. if one motor is overloaded, all mo-tors of the group are switched off). In addition to the red LED “TRIPPED” which signals the switching state of the tripping unit, each sensor circuit is pro-vided with an LED which indi-cates the sensor circuit oper-ated when tripping occurs. Sensor circuits that are not needed must be short-circuited.
The reset function of the 3RN10 62 tripping units can be changed from manual RESET to automatic RESET by jumper-ing the Y1, Y2 terminals. Remote RESET is made possi-ble by connecting an external pushbutton.
Cage Clamp connection1)The 3RN1 thermistor motor pro-tectors are available with Cage Clamp connection as an alter-native to screw connection.Cage Clamp connection is: • fast because wire sleeves
can be dropped and later checks are superfluous,
• reliable because it is resistant to vibrations, thus ensuring maximum contact reliability,
• maintenance-free because checks of screwed connec-tions after transportation are superfluous.
NotesV In the case of tripping units actuated by DC, electrical isola-tion must be ensured by a bat-tery or a safety transformer to DIN VDE 0551.V When use is made of trip-ping units with auto reset in the EEx e area, the control wiring must ensure that the monitored machine will not automatically restart. V In the case of tripping units without short-circuit detection, the sensor resistor must be measured with a suitable mea-suring instrument during com-missioning. If the resistance is < 50 ohm, the sensor circuit must be checked for a short-cir-cuit. V When use is made of 3RN 1000 (no Ready LED), and of the 3RN10 13-1BW01 unit (no change in switching state of the auxiliary switching elements in the event of control failure) for the protection of EEx e motors, separate monitoring of the con-trol voltage is recommended.
Function of the tripping unit in case of control-voltage failure
Equipped with fault memory
Function monostable monostable bistable
at
3RN10 003RN10 103RN10 11
3RN10 123RN10 13-. . . . 03RN10 223RN10 62
3RN10 13-. . .01
Control-voltage failure
Unit trips Unit trips No change in the switching state of the auxiliary contactsReturn of the
control voltage without trip
Unit resets Unit resets
Return of the control voltage after trip
Unit resets Unit remains tripped
3RN1 Thermistor Motor Protection
4/43Siemens NS K · 2000
for PTC Temperature Sensors
Description
Protecting the windings of three-phase transformersA 3RN10 22 thermistor protec-tion combination unit for alarm and tripping and e.g. a 3RP15 time-delay relay can be used for protecting the windings of three-phase dry-type transform-ers by means of PTC Tempera-ture Sensors when the opera-tional voltage of the thermistor motor protection tripping unit must be taken from the main power supply system. The K4 contactor relay then operates on the open-circuit shunt re-lease of the high-voltage switch.
Mode of operationWhen the primary side of the transformer is energized, the voltage on the secondary side builds up to its maximum value within 1.5 s. Since the 3RN1 tripping unit only responds at 0.8 × Us , it would cause the trip-ping of the circuit-breaker via its
open circuit shunt release as long as the operational voltage is available via the still-closed contacts 95-98 of the contactor K4.In order to prevent this, termi-nals K07 and K97 are not ener-gized until it is certain that the 3RN1 trippping units have picked up and the auxiliary cir-cuits have switched to the “Ready” position. The K3 and K4 contactors are not operated until the rated operating temper-ture TNF of each sensor is ex-ceeded. The trippping unit should be switched to “Automatic RESET” (wire jumper between terminals Y1 and Y2). This ensures that the 3UN22 tripping unit is reset when the transformer is turned on again after tripping.The time-delay relay should nor-mally be set to a delay time of ≥ 1.5 s
PTB Test ReportIn conjunction with PTC ther-mistors acc. to DIN VDE 0660 Parts 302 and 303 and DIN 44 081/DIN 40 082 the trip-ping units with alternating cur-rent operation1) are approved for the direct temperature moni-toring of flameproof motors of protection type “increased safety” EEx e and bear the ap-propriate test symbol. The fol-lowing specifications apply:• EN 50 019, • DIN VDE 0170/0171,• DIN VDE 0165, • PTB test regulations
DIN V 0801, Requirement class = AK 3,
• DIN 19 251.With tripping units with DC actu-ation, the electrical isolation must be guaranteed by a bat-tery mains or a safety isolating transformer according to DIN VDE 0551. When 3RN10 13-. . . 01 units(no change of the switching state of the auxiliary contacts in case of control-voltage failure) are used to protect EEx e elec-trical motors, separate monitor-ing of the control voltage is rec-ommended.PTB Approvals No. 3RN10 11/12/13/22/62:PTB EX 3.43-7096/99
WiringThe circuit wiring must be in-stalled as separate control leads. Using the cores of the motor supply leads or other main power cables is not per-missible. If extreme inductive or capacitive interference from parallel power cables is antici-pated, screened leads must be used.Maximum cable length for sen-sor circuit:
Cross-sect. For tripping units
3RN10 003RN10 103RN10 113RN10 123RN10 223RN10 62
3RN10 13
mm2
2.51.50.5
m2 x 28002 x 15002 x 500
m 2)2 x 2502 x 1502 x 50
PTC Temperature SensorsTemperature Sensors having a characteristic complying with DIN VDE 0660 Part 303, DIN 44 081 and DIN 44 082 (e.g. single and triple sensors) can be used with the tripping units.The number of the Temperature Sensors connectable in series depends on the total cold resis-tance. The total cold resistance must not exceed 1.5 kΩ.Resistance temperature char-acteristic of PTC Temperature Sensorswith characteristic (Type A) acc. to DIN VDE 0660 Part 303
4 0 0 0
1 3 3 0
5 5 0
2 5 0
2 0
- 2 0 ° C 0 T N F - 2 0T N F - 5
T N F T N F + 1 5 T
R
N S K - 5 2 9 4 b
T N F + 5
MountingThe 3RN1 tripping units are suit-able for snap-on mounting onto 35 mm standard mounting rails in acc. with EN 50 022 or screw mounting with adapter for screw terminal.Mounting position: any.
Transformer protection with 3RN10 22(diagram: before applying the voltage )
A 2 1 6 1 8
1 5A 1K 5
ϑ
3 x
H 3
N N
H 2
ϑ
3 x
9 5
9 6 9 8
K 4K 3 H 5M 1
K 1
F 2
F 1
K 2H 1
T / R
0 7
0 8 2 T 1 2 T 2 1 T 1 1 T 2 A 2
Y 1 Y 2 A 1
NS2-5265d
F e e d e r s
A l a r m R e a d y T r i p p i n g
A
F1 FuseF2 3RN10 22K3, K4 Contactor relays (e. g. 3RH1)K5 Time-lag relay (z.B. 3RP15)H5 Luminous indicator
“Protective unit ready”
1) With DC operation, the control circuit and the sensor circuit are not electri-cally isolated from each other.
2) Units with short-circuit detection in the sensor circuit. Up to this maximum cable length, a short-circuit in the sensor circuit is detected. If no short-cir-cuit detection is required, the same cable lengths can be used as shown on the left.
3RN1 Thermistor Motor Protection
4/44 Siemens NS K · 2000
for PTC Temperature Sensors
Internal circuit diagrams
Position of output relay “ready for operation, not tripped”
3RN10 00 3RN10 10 General equipment identification A1, A2 Control-voltage termi-
nalsN AmplifierT/R TEST/RESET buttonY1, Y2 Terminals for remote
RESET⇑ The double arrow iden-
tifies an operating state of the contact which deviates from the nor-mal in accordance with DIN 40 900 Part 7 (here: position of the contacts with control voltage applied to terminals A1 and A2)
Equipment identification for 3RN10H1 LED “READY”H2 LED “TRIPPED”K Output relayT1, T2 Terminals for sensor
loops
Equipment identification for 3RN10 22H1 LED “READY”H2 LED “TRIPPED”H3 LED “ALARM”K1, K2 Output relay1T1 to 2T2 Terminals for sensor
loops
Equipment identification for 3RN10 62H1 to H6 LEDs of the tripped
sensor loopsH7 LED “READY”H8 TED “TRIPPED”K Output relay1T1, 1T2 Terminals for to 1st sensor loop6T1, 6T2 Terminals of the 6th
sensor loop
V Apply short-circuit sensor to circuits which are not in use.
3RN10 111) 3RN10 121)
3RN10 13-. . . . 0
3RN10 13-. . . . 1 (bistable)
3RN10 22
3RN10 62
A 1 / 9 5
H 1
T 1 T 2 A 2 9 6 9 8N S K - 1 0 4 4
N H 2 KK
H1
A2T2T1
A1
N
95
96 98NSK-5035
H2
97
K
H1
A2T2T1
A1(A3)
N
95
96 98NSK-5040a
T/R
97
H2 K
H1
A2T2T1
A1(A3)
N
95
96 98NSK-5036a
Y2Y1
T/R
97
H2
K
H 1
N H 2
T 1
T / R
A 2 9 6 9 8
Y 1 Y 2 A 1 9 5
T 2 0 6 0 8
0 5
N S K - 1 0 4 6
K
H 1
N H 2
T 1
T / R
A 2 9 6 9 8
Y 1 Y 2 A 1 9 5
T 2 0 6 0 8
0 5
N S K - 1 0 4 7
07 Y1 Y2 A1 95
08 2T1 1T1 T2 A2 96 98
K1
H3
N
H2
N H1 K2
NSK-1045bT/R
N 95 97
98
T/R
2T11T1 1T2 A2
Y1 Y2 A1
KH7 H8
H1
H4
2 3
5 6
4T1 5T1 6T1 6T25T24T23T22T2 3T1 96NS2-5270b
1) Control-voltage terminals for 3RN 1011 and 3RN 1012: A1 and A2: DC 24 V or AC 230 V (depending on type) A3 and A2: AC 110 V.
3RN1 Thermistor Motor Protection
4/45Siemens NS K · 2000
for PTC Temperature Sensors
Typical circuit diagrams
3RN10 00 tripping unitSwitching off of a three-phase motor via contactor, momentary-contact signal• The contacts are shown with con-
trol voltage applied to terminals A1 and A2 of the tripping unit.
3RN10 11 tripping unitSwitching off of a three-phase motor via contactor, maintained-contact signal• The contacts are shown with con-
trol voltage applied to terminals A1 and A2 of the tripping unit.
3RN10 12 tripping unitSwitching off of a three-phase motor via contactor, momentary-contact signal• The contacts are shown with con-
trol voltage applied to terminals A1 and A2 of the tripping unit.
General equipment identification A1, A2 Control-voltage
terminals1)F4 Short-circuit fuseN AmplifierS0 OFF buttonS1 ON buttonS2 Main switchS3 Remote RESET buttonT/R TEST/RESET buttonY1, Y2 Terminals for remote
RESET⇑ The double arrow iden-
tifies an operating state of the contact which deviates from the nor-mal in accordance with DIN 40 900, Part 7(here: position of the contacts with control voltage applied to ter-minals A1 and A2)
Equipment identification for 3RN10 units
H1 LED “READY”H2 LED “TRIPPED”H3 Indicator lightK Output relayK1 ContactorT1, T2 Terminals for sen-
sor loops
Equipment identification for 3RN10 22 unitsH1 LED “READY”H2 LED “TRIPPED”H3 LED “ALARM”H4 Indicator lightH5 “ALARM” indicator
lightK1, K2 Output relayK3 Contactor1T1 to 2T2 Terminals for sensor
loops
Equipment identification for 3RN10 62 unitsH1 to H6 LEDs of the tripped sensor
loopsH7 LED “READY”H8 LED “TRIPPED”H9 Indicator lightK Output relayK6 Contactor1T1, 1T2 Terminals forto 1st sensor loop6T1, 6T2 Terminals for
6th sensor loop
V Apply short-circuit sensor to circuits which are not in use.
3RN10 22 tripping unit (alarm + trip)
Switching off of a three-phase motor via contactor, alarm via an output relay, pushbutton operation• The contacts are shown with control voltage applied to terminals A1 and A2
of the tripping unit.
3RN10 62 tripping unit (multiple motor protection)
Switching off of 6 three-phase motors via contactors, momentary-contact signal• The contacts are shown with control voltage applied to terminals A1 and A2
of the tripping unit.
K 1
KH 2
A 1 / 9 5
N
H 3K 1
S 0
S 1
N S K - 1 0 4 3
F 4
L 1
S 2
T 1 T 2 A 2 9 6 9 8
N
H 1
ϑ +
3 x
1 ~ 5 0 H z , 2 3 0 V
ϑ +
9 5 9 7
K 1
KH 2
T / R
A 1
N
H 3S 1
N S K - 5 8 4 3 a
F 4
L 1 1 5 0 H z , 2 2 0 V~
3 x
S 2
T 1 T 2 A 2 9 6 9 8
N
H 19 5 9 7
K 1
KH 2
T / R
Y 1 Y 2 A 1
N
H 3K 1
S 0
S 1
N S K - 5 8 4 4 a
F 4
L 1 1 5 0 H z , 2 2 0 V~
S 2
S 3
T 1 T 2 A 2 9 6 9 8
N
H 1
ϑ +
3 x
ϑ
H3
N
95
K3M1
K1 K2H1
T/R
07 Y1 Y2 A1
H5
N
H4K3
S0
S1
NSK-1042a
F4
L1 1 ~ 50 Hz, 220V
3x
S2
S3
08 2T1 T2 1T1 T2 A2 96 98
N
H2
ϑ
3x
N 9 5 9 7
M 1
Y 1 Y 2 A 1
N
S 0
S 1
F 4
L 1 1 5 0 H z , 2 2 0 V~
KH 7 H 8
H 9K 6
K 6
H 1
H 4
2 3
5 6
ϑ
4 T 1 4 T 2
2 3 4 5 6N S K - 5 8 4 6 a
3 x
S 2
S 3
T / R
2 T 11 T 1 1 T 2 3 T 1 3 T 22 T 2 5 T 1 5 T 2 6 T 1 6 T 2 A 2 9 6 9 8
ϑ
3 x
ϑ
3 x
ϑ
3 x
ϑ
3 x
ϑ
3 x
1) Control-voltage terminals for 3RN 1011 and 3RN 1012: A1 and A2: DC 24 V or AC 230 V (depending on type) A3 and A4: AC 110 V.
7PX80 Direct Voltage Adapter
Selection and ordering data
4/46 Siemens NS K · 2000
7PX80 Direct Voltage Adapter
With the 7PX80 40-0A direct voltage adapter, it is possible to use the solid-state overload re-lays 3RB12 ..-..B.. with a voltage in the range from 30 to 120 V DC.
Parallel connection of direct voltage adapters is not al-lowed.By means of an in-phase regu-lator, the input voltage is brought down to 19 to 24 V DC (non-floating). As a result of the regulator’s operating principle, the difference between the input voltage and the output voltage is converted into heat losses. It is therefore recommended that a distance of 10 mm is kept from adjacent units.The direct voltage adapter can also be used to advantage where the input voltage fluctu-ates in a range other than 0.8 to 1.1 × UN.
The number of units which can be operated with the direct volt-age adapter depends on their current input and the maximum input voltage (see load dia-gram).
Design For type Direct voltage adapter Weight Pack.
Order No. Price approx.kg Unit
7PX80 direct voltage adapter For surface mountingSnapping onto 35 mmstandard mounting railin acc. with EN 50 002and screw mounting
3RB12 .. - .. B.. 7PX80 40-0A 0.3 1
Technical data
Direct voltage adapterInput voltage range 30 V DC to 240 V Load diagram
Coil voltage tolerance (A1/A2)Output voltage (B1/A2) 19 V DC to 24 V
Permissible ambient temperature –25 °C to +55 °C
Continuous energizing Permissible
Rated insulation voltage acc. to DIN VDE 0110, Group C
300 V DC
Max. power loss PVmax 13 W
Current input at 24 V DC 3 A
2 0 0
1 6 0
1 2 0
8 0
4 0
m A
3 04 0 8 0
1 1 01 2 0 1 6 0 2 0 0 2 4 0V
P m a x .
A
V
E
NSK-5289b
I
A
Output current
I n p u t v o l t a g e V
Description
4/47
3UL2 Residual-Current Devices
Siemens NS K · 2000
Selection and ordering data3UL2 Residual-Current Devices
Please inquire about other operating voltages and tripping times.
Window size
Operating voltage of testfacility
Rated fault currentI∆n
Also usable for 3RB12 overload relays 1)
Residual-currentdevice without ON-delayTripping time < 30 ms
Residual-current devicewith ON-delayTripping time < 200 ms
Weight
Order No.Preferred type
Price
Order No.Preferred type
Price approx.kg
Tripping relay– 220 to 415 to 1 3UL21 00-0B 3UL21 10-0B 0.22
400 to 690 to 1 3UL21 00-0C 3UL21 10-0C
220 to 415 6 to 40 3UL21 00-1B 3UL21 10-1B400 to 690 6 to 40 3UL21 00-1C 3UL21 10-1C
Summation current transformer40 – 0.3 x 3UL22 01-1A – 0.35
0.5 x 3UL22 01-2A –1 x 3UL22 01-3A 3UL22 11-3A
65 – 0.3 x 3UL22 02-1A – 0.60.5 x 3UL22 02-2A –1 x 3UL22 02-3A 3UL22 12-3A6 3UL22 02-1B 3UL22 12-1B
10 3UL22 02-2B 3UL22 12-2B16 3UL22 02-3B 3UL22 12-3B25 3UL22 02-4B 3UL22 12-4B40 3UL22 02-5B 3UL22 12-5B
120 – 0.3 x 3UL22 03-1A – 2.50.5 x 3UL22 03-2A –1 x 3UL22 03-3A 3UL22 13-3A6 3UL22 03-1B 3UL22 13-1B
10 3UL22 03-2B 3UL22 13-2B16 3UL22 03-3B 3UL22 13-3B25 3UL22 03-4B 3UL22 13-4B40 3UL22 03-5B 3UL22 13-5B
Technical data
Tripping relayType 3UL21 0, 3UL21 1
Rated insulationvoltage Ui AC 50/60 Hz 690 V
Test facilitySuitable for AC 50/60 Hzoperating voltage AC 50/60 Hz
220 to 415 V400 to 690 V
Tripping time of residual-current device3UL21 00 without ON-delay3UL21 10 with ON-delay
< 30 ms< 200 ms
Degree of protection IP 20 acc. to DIN 40 050 andIEC 529
Auxiliary switch 1 NO + 1 NC
Rated operational current Ie/AC-15at 380 V
3 A
Permissible ambient temperature –20 °C to +70 °C
Permissible lengths of connections(incoming and outgoing) betweensummation current transformer and trip-ping relay
Conductor cross section1.5 mm2 ≤ 80 m2.5 mm2 ≤ 140 m
2 x 2.5 mm2 ≤ 280 m
Summation current transformerType 3UL22 .1 3UL22 .2 3UL22 .3
Rated insulationvoltage Ui AC 50/60 Hz 690 V 690 V 1000 V
Rated fault current I∆nwithout ON-delay Awith ON-delay A
0.3 to 11
0.3 to 401 to 40
0.3 to 401 to 40
Permissible ambient temperature °C –20 to +70
–20 to +70
–20 to +70
Window size mm 40 65 120
For PROTODUR cable(can be passed through) max. mm2 4 x 95 4 x 240 8 x 300
3UL2 Residual-Current Devices
4/48 Siemens NS K · 2000
Technical data
ApplicationThe purpose of the residual-cur-rent device protection is to pre-vent the build-up of excessive contact voltage on exposed conductive parts by interrupting all phases and the neutral of the supply line within 0.2 s, in the event of a fault current which ex-ceeds a specified value.In conjunction with circuit-breakers, the residual-current device supplements the earth-leakage circuit-breaker ranges 5SV and 5SZ.The residual-current device is also suitable for earth-fault mon-itoring.The version with ON-delay per-mits trip discrimination with load-side circuit-breakers, which are combined with instan-taneous residual-current de-vices.The 3UL21 tripping relays and the associated, but separate, 3UL22 summation current transformers are resistant to cli-matic changes.
Design and mode of operationThe tripping relay consists of a tripping mechanism and an auxiliary switch 1 NO + 1 NC. These components are acco-modated in a moulded-plastic enclosure. The auxiliary switch acts, for example, on the under-voltage release of the associ-ated circuit-breaker (see Page 4/49).The separate summation cur-rent transformer is likewise en-capsulated in a moulded-plas-tic enclosure.
Switching capacity and short-circuit protection of auxiliary switchConventional thermal currentIth
Making and breaking capacity with AC Making and breaking capacity with DC FuseMax. rated current
Rated voltage Rated operational Rated voltage Rated operational of short-circuit fuse of a miniature circuit-breaker(see Catalog I 2.1)
currentIe/AC-15
currentIe/AC-15
DIAZED NEOZEDUtilization cat. gL/gG
DIAZEDQuick-resp.
A AC V A DC V A A A A
6 up to 230 3 24 2 10 10 66 380/400 3 110 0.4 10 10 66 500 1.5 220 0.2 10 10 6
Description
The main conductors, including the neutral conductor, are passed through the window in the summation current trans-former.The summation current trans-formers are provided with screening tubes, which prevent erroneous tripping due to high motor starting currents.If delayed tripping is required, the summation current trans-former with ON-delay must be combined with the correspond-ing tripping relay.A blue resetting button R, with which the self-inhibiting relay must be enabled after tripping, is located on the front of the re-lay enclosure. A black test butt-ton T for checking the residual-current device is also provided.When the test button is pressed, the residual-current device must trip the associated circuit-breaker via the auxiliary switch (refer to typical circuit dia-grams). The test button should be pressed occasionally to check the residual-current de-vice for correct functioning.For r.c.d. protection, all accessi-bly exposed conductive parts are earthed, insofar as they are not automatically and perma-nently connected to earth.The neutral conductor must, however, not be earthed again after the summation current transformer, otherwise proper functioning of the residual-cur-rent device is not ensured.
The maximum resistance to earth RA, related to the permissi-ble continuous contact voltages UL can be obtained from the fol-lowing expression:
Permissible resistance to earth RA
When an installation is function-ing normally, the sum of the cur-rents and their field in the sum-mation current transformer is zero, i. e. no voltage is induced in the secondary winding. If, however, an insulation defect after the residual-current device allows a fault current to flow to earth, the resulting differential current energizes the second-ary winding of the transformer. This occurs irrespective of whether the earth fault occurs on the equipment being pro-tected or in one of the lines. The voltage induced in the second-ary winding acts on the coil of a holding magnet; the built-in aux-iliary switch, 1 NO + 1 NC with reclosing lock-out, then trips the circuit-breaker or causes the contactor to drop out.Depending on local conditions, the summation current trans-former can be connected either ahead of, or after, the circuit-breaker.
RA = Permissible contact voltage ULRated fault current I∆n
Rated faultcurrent I∆n
Permissible resis-tance to earth RA at contact voltage UL
AAC 50 VΩ
AC 25 VΩ
0.30.31
1040
1661005051.25
8350252.50.6
The test resistor of the tripping relay is not continuously rated. It must therefore be ensured that the supply for the test circuit is interrupted when the relay picks up. This applies to voltage tap-ping after the associated circuit-breaker (refer to page 4/49). If the voltage is tapped ahead of the circuit-breaker or if a differ-ent voltage source is selected, the test circuit must be interrupt-ed with auxiliary switches 15 to 16 (refer to page 4/49).• Terminals
The terminals of the tripping relays and summation current transformers are of the SIGUT type. Two solid (1 to 2.5) mm2
conductors or two finely-stranded (0.75 to 1.5) mm2 conductors with end sleeves can be connected.
• Mounting positionThe tripping relays and sum-mation current transformers can be mounted in any posi-tion.
3UL2 Residual-Current Devices
4/49Siemens NS K · 2000
Typical circuit diagrams
Protective circuit with circuit-breaker and residual-current device.Tapping of test-circuit voltage after circuit-breaker.
In line with DIN 40 713, the symbols used in the internal circuit diagrams provide information on the type, configuration and mode of opera-tion of the devices, but not on their design.
Protective circuit with circuit-breaker and residual-current device.Tapping of test-circuit voltage ahead of circuit-breaker, or external voltage source(Interruption with auxiliary switches 15 to 16 required)
F1, F2 Control-circuit fusesF3, F4 Test-circuit fuses
(F4 can be dispensed with if the test-circuit voltage is tapped off between a phase and the neutral conductor)
F5 Tripping relayF6 Fault-current releaseF7 Undervoltage releaseH1 Indication “Malfunction due to fault current”H2 Indication “Ready”Q1 Circuit-breakerRESET Resetting button “R”R1 Test resistorT1 Summation current transformerS1 Test button “T”
N S K - 5 0 6 1 b
2 7 1 52 8 1 6
2 4 6 8
1 3 5 7
I > > I > >U <
I > >
I >R E S E T
L 1 L 2 L 3 N
F 1
Q 1D 2
F 7
D 1
C 1
C 2
Z 1
Z 2
T 1
F 6
A 1
A 2
Z 3
R 1
Z 4
F 3 F 4S 1
F 5
H 1
A
( B u t t o n " R " )
( B u t t o n " T " )
L o a d
2 7 1 52 8 1 6
2 4 6 8
1 3 5 7
U <I > > I > > I > >
I >
N S K - 5 0 6 5 b
F 1
L 1
F 2
N ( L 2 )
Q 1
D 2
L 1 L 2 L 3 N
H 1 H 2F 7
D 1
F 6C 1
C 2
Z 1
Z 2
T 1
A 1
S 1
Z 4
R 1
R E S E T
F 5
A 2
Z 3
A L o a d
( B u t t o n " T " )
( B u t t o n " R " )
C o n t r o l s u p p l y v o l t a g e
Thermally Delayed Overload Relays
Dimensions
4/50 Siemens NS K · 2000
Thermally Delayed Overload Relays
Screw connection
Lateral clearance to earthed components mimimum 6 mm.
3RU11 16 -..B0 overload relays Size S00 with accessories
3RU11 16, 3RB10 16 overload relays Size S00with adapter for installation as a single unit with accessories
4) Module for remote RESET
3RU11 26-..B., 3RB10 26 overload relays Size S0with adapter for installation as a single unit
3RB10 36, 3RU11 36-..B. overload relays Size S2with adapter for installation as a single unit
3RB10 46, 3RU1146-..B. overload relays Size S3with adapter for installation as a single unit
5) Mounting on 35 mm standard mounting rail,15 mm deep acc. to EN 50 022or 75 mm standard mounting rail acc. to EN 50 023.
Dimensions for “contactor with fitted overload relays” see Part 3.
1)
3)
2)
3SB1
NS
K-8
631
46
185148
3349
68
5
10 2
44
14
7
61
11
8
15,545
max. 161 max. 8
1) Cable release(400 mm or 600 mm long,mounting at the front or laterally at the holder)
2) Mechanical RESET3) Holder for RESET
4)NSK 8632
5
5 3545
75
4,5
5
68
5
3752533
52
43
87
38
NSK-9303a
445
5 35
85
45
4,5
97
50
4,5
44
6
86
62
5
NSK-9305a
405
5
5,5 4455
54
10
25
,5
91
50
4
5107
51
NSK-9307b
5)
595
62
5
110
5
5 6070
5
7
130
79
57
5
Thermally Delayed Overload Relays
4/51Siemens NS K · 2000
Dimensions
Cage Clamp connection
Lateral clearance to earthed components mimimum 6 mm.
3RU11 16 -..C1 overload relays Size S00with accessories (same construction for sizes S00 to S3).
1) Mechanical RESET2) Cable release
(400 mm or 600 mm long,mounting at the front or laterally on the holder)
3) Holder 4) Remote RESET
3RU11 26-..D0 overload relays Size S0
3RU11 36-..D0 overload relays Size S2
3RU11 46-..D0 overload relays Size S3
5) Mounting on 35 mm standard mounting rail,15 mm deep acc. to EN 50 022or 75 mm standard mounting rail acc. to EN 50 023.
Dimensions for “contactor with fitted overload relays” see Part 3.
15,535
59
2
4,5
8
687,5
5
75
1484617,5
185
3)
1)
2)
455
28
NS
K-8
249
4)
3545
59
2
5
4,5
687,5
5 3725
5
57
54
2
12 2
6
NS
K-8
248
H A
RESETSTOP
TEST0 1
4,5
97
50
3545
5
85
5
64
4
8644
5
4,5 62
NS
K-8
265
SIEMENS
5,5
10
2
5,5 4455
91
5
5
45
0
10740
5
51
H A
RESETSTOP
TEST0 1
SIEMENS54
NS
K-8
266
51
20
62
5 6070
11
0
5
5
55
7
13059
5
79
7
H A
RESETSTOP
TEST0 1
SIEMENS
NSK-8267
5)
Thermally Delayed Overload Relays
See Part 3 for dimensions for 3UA60 to 3UA62 overload relays fitted to 3TF contactors
4/52 Siemens NS K · 2000
1) For 3UX1 2 links.2) 3UX1 210 links can be used at Ie ≤ 200 A.
3UA60 00for mounting onto contactor andinstallation as a single unit
3UA66, 3UA68for installation as a single unit
3UA61 00, 3UA62 00for mounting onto contactor and for installing as a single unit
Type a b c ∅ d e f
3UA66 00-2K (200 A), -3B3UA66 00-3C (400 A), -3D, -3E3UA68
465052
140146156
697071
91111
160171186
20 x 325 x 430 x 5
* Minimum clearance from earthed components.** Dimension for the square OFF-button (stroke 3 mm);
Dimension for the round RESET-button (stroke 2.5 mm) less 2.5 mm.1) For 35 mm standard mounting rail acc. to EN 50 022.2) For 75 mm standard mounting rail acc. to EN 50 023.3) Height and spacing of the connection rails can be accommodated to
3TF50/3TF52 contactors (not for 3UA61).
NS
K-1
301
15 6,6
40104 77
35
85
107
761
22
143
6 84
1)
37 37
13
1)
143
2)
∅
∅
a a
130
b e
1247750
150
df
2)
2120
220**
145
11c
NS
K-1
302
20
(37)
9
40104 77
35
87
107
∅7
6122
143
6 106 (84)
1)
3)42
3) (37)42
3)
13
1)
∅
Mounting for 3TF52 to 3TF68 contactors, with3UA6 overload relays for installing as a single unit
3TF52 and 3UA62 00,3TF53 and 3UA66
3TF54/3TF55/3TF56and 3UA66
3TF57 and 3UA68 3TF68 and 3UA68
NS
K-5
062
a
a
d
bm
in.
7
NS
K-5
063a
a
b
7 d
fm
in.
NS
K-5
063a
a
b
7 d
fm
in.
NS
K-5
064a
a
7 d
fb
min
.
Contactor Links Overloadrelay
Size Type Type Type a bmin1) d f
8 3TF523TF53
3UX1 2213UX1 210
3UA623UA66
3535
150150
4050
––
10 3TF543TF55
3UX1 2112)3UX1 211
3UA663UA66
3535
6060
5050
130130
12 3TF563TF57
3UX1 2113UX1 218
3UA663UA68
4545
55108
5050
130130
14 3TF68 3UX1 218 3UA68 50 148.5 50 130
Overload Relays
4/53Siemens NS K · 2000
DimensionsOverload Relays
3RB12 solid-state overload relays
3UX1 2.. links
3RB12 46 overload relays 3RB12 5. and 3RB12 62 overload relays
NSK-7048d
7,25070
100
4,5Ø
85
100
127,55
e
b
af
cd
10
12,5
14
idb
gh f
ae
k m
cl
j
n
o
NS
K-7
04
9b
p
Overload relays
a b c d e f Overloadrelays
a b c d e f g h i j k l m n o p
3RB12 46-1E3RB12 46-1P3RB12 46-1Q
151010
293434
242929
474646
–4848
–44
3RB12 53-0F3RB12 57-0K3RB12 62-0L
120145230
858585
155175190
110105120
405070
∅7∅9∅1
425270
3748–
125130135
414655
203040
131151166
7.27.27.2
13––
145160175
468
3UX1 2.. links Links Min. hole pitchcontactorbar tooverloadrelay bar
Terminal covers3TX6 5, 3TX7 4 and3TX7 5 see Part 3.
Type Dim.
a b c c1 d d1 e e1
3UX1 2103UX1 211
165185
1825
1012.5
12.512.5
2328
2828
911
1111
4940 to 50
3UX1 2183UX1 221
290185
2518
12.510
12.510
2823
2823
119
119
10069
N S K - 5 0 7 3 ac
eb e1
d 1
1
a
d
cA
I n s u l a t i o nO v e r l o a d r e l a yc o n n e c t i o n
C o n t a c t o rc o n n e c t i o n
Thermistor Motor Protection
Dimensions
4/54 Siemens NS K · 2000
Thermis tor Motor Protect ion
3RN10 thermistor motor protection , 7PX80 direct voltage adapter
3RN10 00 motor protection relays 3RN10 10
3RN10 11, 3RN10 12, 3RN10 13, 3RN10 22 3RN10 62
7PX80 40-0A
22,588865
80
57
74
62
14,4
NS
K-9
82
2
10
22,5
57
28
10
8886
5
80
74
62
NS
K-9
82
1
NS
K-9
82
0
8886
522,5
14,4
10
0
57
28
10
80
74
62
875
45
7
81
59
30
63
12
10
4
NS
K-9
82
3
45 95
NS
K-5
07
0b7
7
N SK- 5071
50
M4
35
60
7,5
62,5
5
Residual-Current Devices
4/55Siemens NS K · 2000
DimensionsResidual-Current Dev ices
3UL2 residual-current devices
3UL22 summation current transformer 3UL21 tripping relay
NSK-5280a
a1a2 a3
b5
b2
b3
a4
b1
b 4
a5
c 1 c2 c 3
a6
Z1
A2 Z3
Z2
NSK-5279a
76
10010,5 6,295 10
15
35
4,8
60
7 35
10
455
90
Type a1 a2 a3 a4 a5 a6 b1 b2 b3 b4 b5 c1 c2 c3
3UL22 .1-A3UL22 .2-A3UL22 .3-A
100125200
7595
165
101020
151520
for M 4for M 4for M 4
80100170
85110200
72.597.5
190
42.555
100
7.57.5
10
4065
120
657085
506070
404555
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