Emax

Power breakers

Low Voltage Products & Systems 17.1ABB Inc. • 888-385-1221 • www.abb.us/lowvoltage 1SXU000023C0202

17

Emax power breakers

ABB’s Emax series of low voltage power circuit breakers embodies over half a century’s experience and technological development in power circuit breakers. The Emax offers a series of breakers that is totally innovative in its technological design, ease of installation and use, making it the ideal solution for the growing requirements of designers, switchboard and switchgear manufacturers, installers, OEMs and users.

The Emax power circuit breakers are UL Listed and meet the ANSI and IEC Standards for low voltage power circuit breakers.

ABB Emax power circuit breakers are available in five different models with rated continuous current from 800A to 6300A and rated short-circuit current range from 42kA to 200kA (480V).

Technical catalog 1SDC200005 D0201 is available upon request.

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Emax

Power breakers

17.4 Low Voltage Products & Systems

1SXU000023C0202 ABB Inc. • 888-385-1221 • www.abb.us/lowvoltage

17

General informationCatalog number explanationEmax breaker

D 3 V E H B A H 0 A 0 0 0 X X

Accessories: X=none;A=mechanical counter; B = bell alarmC=bell alarm w/remote reset 24-30VAC/DC D=bell alarm w/remote reset 110-130VAC/DC E=bell alarm w/remote reset 220-240VAC/DCF= A+B; G=A+C; H=A+D; J=A+E

Undervoltage trip: 0= none50/60Hz & VDC: A=24VDC B=30V C=48V D=60V E=110-120V F=125-127V G=220-240V H=250V J= 380-400VAC K=440-480VACSecond shunt trip: L= 24VDC M=30V N=48V P=60V Q=110-120V R=125-127V S=220-240V T= 250V U=380-400VAC V=440-480VAC

1 IEC only2 UL only3 Horizontal terminals are standard except for the E3 3200A; for vertical terminals, see page 16.36 for conversion kit.4 Available as E3 up to 2000A and E6 up to 5000A.5 Consult factory.

Shunt trip: 0 = none50/60Hz & VDC: A=24VDC; B=30; C=48; D=60; E=110-120; F=125-127; G=220-240, H=250; J=380-400VAC; K=440-480VAC; L=special low Z=120-127VAC/DC

Spring charging motor: (includes spring charged signal, P/N does not show)0=none, A=24-30VAC/VDC, B=48-60VAC/VDC, C=110-130VAC/VDC,D=220-250VAC/VDC, E=spring charged signal only

Contacts: A=4 aux B=10 aux D=UV energ. N.O. E=UV energ. NC F=A & D G=A & E H=B & D J = B & E (15 auxiliary contacts available as separate accessory)

Closing coil: 0=none 50/60Hz & VDC: A=24VDC; B=30; C=48; D=60; E=110-120; F=125-127; G=220-240; H=250; J=380-400VAC; K=440-480VAC

Trip unit accessories: (not compatible with PR121/P) A=PR120/K4C; B=PR120/V (bottom; supplied as std on PR123/P); C=PR120/D-M; D=PR120/D-BT; E=A+B; F=A+C; G=A+D; H=A+B+C; I=A+B+D; J=B+C+D; K=A+C+D; L=A+B+C+D; M=B+C; N=PR120/V (top); P=A+N; Q=A+N+C; R=A+N+D; S=N+C+D; T=A+N+C+D; U=N+C; V=B+D; W=N+D; 0=none

Trip unit: A=PR121/P, LI; B=PR121/P, LSI; C=PR121/P, LSIG; D=non-automatic; E=PR122/P, LI; F=PR122P, LSI G=PR122/P, LSIG; H=PR122/P, LSIRc1 J=PR123/P, LSI + PR120/V; K=PR123/P, LSIG + PR120/V

Version: B=UL fixed3; D=UL drawout, less cradle; F=IEC fixed3; W=IEC drawout, less cradle

Rating plug: A=400; B=600/630; C=800; D=1000; E=1200/1250; F=1600; G=2000; H=2500; J=30002; K=3200, L=36002; M=4000; N=5000; P=63001; 0=None (Non-automatic only)

Breaking capacity: B=basic; N=normal; S=standard; H=high; V=very high; L=limiting; Q=1000VAC, R=750VDC (3P) 1000VDC (4P)5; X=200kA4

Frame size: 1=E1, 3P; 2=E2, 3P; 3=E3, 3P; 4=E4, 3P; 6=E6, 3P; A=E1, 4P; B=E2, 4P, C=E3, 4P; D=E4, 4P; (50% neutral); F=E6, 4P (50% neutral); G=E4, 4P (100% neutral); H=E6, 4P (100% neutral)

Frame ampere rating: : A=800; B=1200/1250; C=1600; D=2000; E=2500; F=3200; G=3600; H=4000; J=5000, N=63001; P=10001

Locking provisions: X = none; A = keylock (open) B = button guardC = padlock provision (open) D = withdrawable position lock (connected, test, and disconnected positionsE = withdrawable position lock (test, and disconnected positions)F= A+B; G=A+C; H=A+D; J=A+E; K=B+D; L=B+E; M=C+D; N=C+E; P=A+B+D; Q=A+B+E; R=A+C+D; S=A+C+E; T=heavy duty padlock provision (open); U=A+T; V=T+D; W=T+E; Y=A+T+D; Z=A+T+E

ABB3/2

3

1SD

C20

0105

F000

1

1819 9 12 22 133

16 6 7 11 21 26 248 5

4 23 14 25

1520101 217

Trip units and trip curvesPR121/P

1 LED signaling Alarm for protectionfunction L

2 LED signaling Alarm for protectionfunction S

3 LED signaling Alarm for protectionfunction I

4 LED signaling Alarm for protectionfunction G

5 DIP switches for fine settingcurrent threshold l1

6 DIP switches for main settingcurrent threshold l1

7 DIP switches for setting currentthreshold I2

8 DIP switches for setting currentthreshold l3

17 Indication of the DIP switchpositions for the various currentthreshold values l2

18 Indication of the DIP switchpositions for the various currentthreshold values l3

19 Indication of the DIP switchpositions for the various currentthreshold values l4

20 Indication of DIP switch positionsfor the various time settings t1

21 Indication of DIP switch positionsfor the various time settings t2

22 Indication of DIP switch positionsfor the various time settings t4

23 DIP switch for setting networkfrequency and neutral protectionsetting

CharacteristicsPR121/P is the new basic and complete trip unit for the Emax series. The complete range ofprotection functions together with the wide combination of thresholds and trip times offered makeit suitable for protecting a wide range of alternating current installation. In addition to protectionfunctions the unit is provided with multifunction LED indicators. Furthermore, PR121/P allowsconnection to external devices enhancing its advanced characteristics like remote signaling andmonitoring, or remote supervision display.

24 Trip cause indication and trip testpushbutton

25 Test connector for connecting ortesting the trip unit through anexternal device (PR030/B batteryunit, BT030 wireless communica-tion unit and PR010/T unit)

26 Serial number of protection tripunit

Caption

9 DIP switches for setting currentthreshold l4

10 DIP switches for setting trip timet1 (type of curve)

11 DIP switches for setting trip timet2 (type of curve)

12 DIP switches for setting trip timet4 (type of curve)

13 Indication of the DIP switchposition for network frequency

14 Indication of the DIP switchposition for Neutral protectionsetting

15 Rating plug

16 Indication of the DIP switchpositions for the various currentthresholds values l1

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Operation and protection functionsProtection functions

The PR121 trip unit offers thefollowing protection functions:• overload (L)• selective short circuit (S)• instantaneous short circuit (I)• ground fault G).

Overload (L)

The long time-delay trip pro-tection L is type l2t = k; 25 cur-rent thresholds and 8 curvesare available. Each curve isidentified by the trip time inrelation to the current l = 3 x l1(l1 = set threshold).

Selective short circuit (S)

The selective short circuit pro-tection S can be set with twodifferent types of curves witha trip time independent of thecurrent (t = k) or with a con-

stant specific let-through en-ergy (t = k/l2).15 current thresholds and 4curves are available, allowinga fine setting. Each curve isidentified as follows:– for curves t = k by the trip

time for l > I2– for curves t = k/l2 by the trip

time for l = 10xln (ln = ratedcurrent of the circuit breaker).

The function can be excludedby setting the DIP switch com-bination to “OFF”.

Adjustable instantaneousshort circuit (l)

The protection I offers 15 tripthresholds and can be ex-cluded (dip switches in “OFF”position).

Ground fault (G)

The ground fault protection G(which can be excluded) of-fers 7 current thresholds and3 curves. Each curve is iden-tified by the time t4 in relationto current I4. As per S protec-tion the trip time can be cho-sen independent of the cur-rent (t = k) or with a constantspecific let-through energy(t = k/l2).

Note: the maximum value forthe function G is 1200 A andthis function is repressed forfault current values higherthan the values shown in ta-ble below.

ABB3/2

3

1SD

C20

0105

F000

1

1819 9 12 22 133

16 6 7 11 21 26 248 5

4 23 14 25

1520101 217

Trip units and trip curvesPR121/P

1 LED signaling Alarm for protectionfunction L

2 LED signaling Alarm for protectionfunction S

3 LED signaling Alarm for protectionfunction I

4 LED signaling Alarm for protectionfunction G

5 DIP switches for fine settingcurrent threshold l1

6 DIP switches for main settingcurrent threshold l1

7 DIP switches for setting currentthreshold I2

8 DIP switches for setting currentthreshold l3

17 Indication of the DIP switchpositions for the various currentthreshold values l2

18 Indication of the DIP switchpositions for the various currentthreshold values l3

19 Indication of the DIP switchpositions for the various currentthreshold values l4

20 Indication of DIP switch positionsfor the various time settings t1

21 Indication of DIP switch positionsfor the various time settings t2

22 Indication of DIP switch positionsfor the various time settings t4

23 DIP switch for setting networkfrequency and neutral protectionsetting

CharacteristicsPR121/P is the new basic and complete trip unit for the Emax series. The complete range ofprotection functions together with the wide combination of thresholds and trip times offered makeit suitable for protecting a wide range of alternating current installation. In addition to protectionfunctions the unit is provided with multifunction LED indicators. Furthermore, PR121/P allowsconnection to external devices enhancing its advanced characteristics like remote signaling andmonitoring, or remote supervision display.

24 Trip cause indication and trip testpushbutton

25 Test connector for connecting ortesting the trip unit through anexternal device (PR030/B batteryunit, BT030 wireless communica-tion unit and PR010/T unit)

26 Serial number of protection tripunit

Caption

9 DIP switches for setting currentthreshold l4

10 DIP switches for setting trip timet1 (type of curve)

11 DIP switches for setting trip timet2 (type of curve)

12 DIP switches for setting trip timet4 (type of curve)

13 Indication of the DIP switchposition for network frequency

14 Indication of the DIP switchposition for Neutral protectionsetting

15 Rating plug

16 Indication of the DIP switchpositions for the various currentthresholds values l1

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Operation and protection functionsProtection functions

The PR121 trip unit offers thefollowing protection functions:• overload (L)• selective short circuit (S)• instantaneous short circuit (I)• ground fault G).

Overload (L)

The long time-delay trip pro-tection L is type l2t = k; 25 cur-rent thresholds and 8 curvesare available. Each curve isidentified by the trip time inrelation to the current l = 3 x l1(l1 = set threshold).

Selective short circuit (S)

The selective short circuit pro-tection S can be set with twodifferent types of curves witha trip time independent of thecurrent (t = k) or with a con-

stant specific let-through en-ergy (t = k/l2).15 current thresholds and 4curves are available, allowinga fine setting. Each curve isidentified as follows:– for curves t = k by the trip

time for l > I2– for curves t = k/l2 by the trip

time for l = 10xln (ln = ratedcurrent of the circuit breaker).

The function can be excludedby setting the DIP switch com-bination to “OFF”.

Adjustable instantaneousshort circuit (l)

The protection I offers 15 tripthresholds and can be ex-cluded (dip switches in “OFF”position).

Ground fault (G)

The ground fault protection G(which can be excluded) of-fers 7 current thresholds and3 curves. Each curve is iden-tified by the time t4 in relationto current I4. As per S protec-tion the trip time can be cho-sen independent of the cur-rent (t = k) or with a constantspecific let-through energy(t = k/l2).

Note: the maximum value forthe function G is 1200 A andthis function is repressed forfault current values higherthan the values shown in ta-ble below.

ABB3/4

3

Trip units and trip curvesPR121/P

User interface

The trip unit can be set by using the dip switches on the front.Up to four LEDs (according to the version) are also available for signaling.These LEDs (one for each protection) are active when:• a protection is timing. For protection L the prealarm status is also shown;• a protection has tripped (the corresponding LED is activated by pressing the “Info/Test”

pushbutton);• a failure in connection of a current sensor or in the opening solenoid is detected. The indica-

tion is active when the unit is powered (through current sensors or an auxiliary power supply)• wrong rating plug for the circuit breaker.The protection tripped indication works even with the circuit breaker open, without the need forany internal or external auxiliary power supply. This information is available for 48 hours ofinactivity after the trip and is still available after reclosing. If the query is made more than 48hours later it is sufficient to connect a PR030/B battery unit, PR010/T, or a BT030 wirelesscommunication unit.

Communication

By means of the BT030 wireless communication unit, PR121/P can be connected to a pocketPC (PDA) or to a personal computer, extending the range of information available for the user.In fact, by means of ABB’s SD-Pocket communication software, it is possible to read the valuesof the currents flowing through the circuit breaker, the value of the last 20 interrupted currents,and the protection settings.PR121 can also be connected to the optional external PR021/K signaling unit, for the remotesignaling of protections alarms and trips, and to HMI030, for the remote user interfacing.

Setting the neutral

Protection of the neutral can be set at 50%, 100% or 200% of the phase currents. Settings above50% can be selected for E1-E2-E3-E4/f and E6/f. In particular, setting the neutral at 200% ofphase current requires protection L to be set at 0.5In in order to respect the current-carryingcapacity of the circuit breaker. The user can also switch the neutral protection OFF. When three-poles circuit breakers with external neutral current sensor are used, a setting above 100% forthe neutral does not require any reduction in the L setting.

Test Function

A trip test can be carried out using the info/Test pushbutton and the PR030/B battery unit (orBT030).The PR121/P electronic trip unit can be tested by using the PR010/T test and configuration unitby connecting it to the TEST connector.

ABB3/4

3

Trip units and trip curvesPR121/P

User interface

The trip unit can be set by using the dip switches on the front.Up to four LEDs (according to the version) are also available for signaling.These LEDs (one for each protection) are active when:• a protection is timing. For protection L the prealarm status is also shown;• a protection has tripped (the corresponding LED is activated by pressing the “Info/Test”

pushbutton);• a failure in connection of a current sensor or in the opening solenoid is detected. The indica-

tion is active when the unit is powered (through current sensors or an auxiliary power supply)• wrong rating plug for the circuit breaker.The protection tripped indication works even with the circuit breaker open, without the need forany internal or external auxiliary power supply. This information is available for 48 hours ofinactivity after the trip and is still available after reclosing. If the query is made more than 48hours later it is sufficient to connect a PR030/B battery unit, PR010/T, or a BT030 wirelesscommunication unit.

Communication

By means of the BT030 wireless communication unit, PR121/P can be connected to a pocketPC (PDA) or to a personal computer, extending the range of information available for the user.In fact, by means of ABB’s SD-Pocket communication software, it is possible to read the valuesof the currents flowing through the circuit breaker, the value of the last 20 interrupted currents,and the protection settings.PR121 can also be connected to the optional external PR021/K signaling unit, for the remotesignaling of protections alarms and trips, and to HMI030, for the remote user interfacing.

Setting the neutral

Protection of the neutral can be set at 50%, 100% or 200% of the phase currents. Settings above50% can be selected for E1-E2-E3-E4/f and E6/f. In particular, setting the neutral at 200% ofphase current requires protection L to be set at 0.5In in order to respect the current-carryingcapacity of the circuit breaker. The user can also switch the neutral protection OFF. When three-poles circuit breakers with external neutral current sensor are used, a setting above 100% forthe neutral does not require any reduction in the L setting.

Test Function

A trip test can be carried out using the info/Test pushbutton and the PR030/B battery unit (orBT030).The PR121/P electronic trip unit can be tested by using the PR010/T test and configuration unitby connecting it to the TEST connector.

ABB 3/5

3PR121/P LI

1SD

C20

0106

F000

1

PR121/P LSI

PR121/P LSIG

1SD

C20

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Versions available

The following versions are available:

ABB3/6

3

Trip units and trip curvesPR121/P

Protection functions and setting values - PR121Function Trip threshold Trip time* Can be excluded Relation t=f(I)

Overload I1= 0.4 - 0.425 - 0.45 - 0.475 - 0.5 - At current If = 3 x I1 – t=k/I2

protection 0.525 - 0.55 - 0.575 - 0.6 - 0.625 - t1 = 3 - 12 - 24 - 36 - 48 - 72 - 108 - 144 s (1)

0.65 - 0.675 - 0.7 - 0.725 - 0.75 -0.775 - 0.8 - 0.825 - 0.85 - 0.8750.9 - 0.925 - 0.95 - 0.975 - 1 x In

Tolerance (2) Release between 1.05 and 1.2 x I1 ± 10% If ≤ 6 x In± 20% If > 6 x In

Selective short-circuit I2= 1 - 1.5 - 2 - 2.5 - 3 - 3.5 - 4 - 5 At current If > I2 ■ t=kprotection 6 - 7 - 8 - 8.5 - 9 - 9.5 - 10 x In t2 = 0.1 - 0.2 - 0.3 - 0.4 s

Tolerance (2) ± 7% If ≤ 6 x In The best of the given:± 10% If > 6 x In ± 10% or ± 40 ms

I2= 1 - 1.5 - 2 - 2.5 - 3 - 3.5 - 4 - 5 At current If = 10 x In ■ t=k/I2

6 - 7 - 8 - 8.5 - 9 - 9.5 - 10 x In t2 = 0.1 - 0.2 - 0.3 - 0.4 s

Tolerance (2) ± 7% If ≤ 6 x In ± 15% If ≤ 6 x In± 10% If > 6 x In ± 20% If > 6 x In

Instantaneous I3= 1.5 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - Instantaneous ■ t=kshort-circuit protection 9 - 10 - 11 - 12 - 13 - 14 - 15 x In

Tolerance (2) ± 10% ≤ 30 ms

Ground fault I4= 0.2 - 0.3 - 0.4 - 0.6 - At current If > I4 ■ t=kprotection 0.8 - 0.9 - 1 x In(3) t4 = 0.1 - 0.2 - 0.4 s

Tolerance (2) ± 7% The best of the given: ± 10% or ± 40 ms

I4= 0.2 - 0.3 - 0.4 - 0.6 - At current If = 4.47 x I4 If = 3.16 x I4 If = 2.24 x I4 ■ t=k/I2

0.8 - 0.9 - 1 x In (3) t4 = 0.1 s t4 = 0.2 s t4 = 0.4 s

Tolerance (2) ± 7% ± 15%

* = referring to the electronicsIf = fault current(1) The minimum trip time is 1 s, regardless of the type of curve set (self-protection)(2) These tolerances are valid with the following hypotheses:

- trip unit self supplied when running (without start-up) - two-phase or three-phase power supply - trip time set ≥ 100 ms

(3) The maximum value for G protection is 1200 A

In all cases not covered by the above hypotheses, the following tolerance values are valid:

Power supply

The unit does not require an external power supply either for protection functions or for alarmsignaling functions. It is self-supplied by means of the current sensors installed on the circuitbreaker. For it to operate, it is sufficient for the three phase to be loaded at 70 A for E1, E2 and E3,and 140 A for E4 and E6. An external power supply can be connected in order to activateadditional features, and in particular for connection to external devices: HMI030 and PR021/K.

PR121/P

Auxiliary power 24 V DC ± 20%supply (galvanically insulated)Maximum ripple 5%Inrush current @ 24V ~10 A for 5 msRated power @ 24V ~2 W

Trip threshold Trip time

L Release between 1.05 and 1.2 x I1 ± 20%S ± 10% ± 20%

I ± 15% ≤ 60ms

G ± 15% ± 20%

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C20

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2000

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Functions L-I

Functions L-S-I

Threshold and trip timestolerances ........................ page 3/6