1. LV- AND MV-NETWORKSSICONThe first cable connector systemwith stepless shear bolts.

2. SICONThe Better is the Enemy of the Good.AdvantagesQ Up to 30 % increased contact force onAl conductors compared with conventionaltype terminalsQ Bolt base plate for uniform friction andwithout damage on the conductorQ Full utilisation of the thread loading for anysize of conductorQ No special tool neededQ Smooth breakage of the shear bolt simplifiestightening processQ The remains of the bolt stay on the tool andcan be disposed safelyQ Technical verification is required for class5 fine stranded conductorsTerminals, connectors and cable lugs using screw tech-nologyhave been on the advance for years. And withgood reason. Bolted connections offer technical andpractical advantages that compression connectionscannot provide. For instance, a large cross-section rangeand easy handling. This clamping technology perfectlycomplements the new multi-range cable accessories.Fitting requires only a simple tool.Until now, the multi-stage shear bolt has beenthe state of the art in screw technology. The designstrength of the multi-stage shear bolt the integral prede-terminedbreaking points is at the same time its decisiveweakness. Each breaking point forms a discontinuity inthe loadbearing thread, and the maximum clamping forcecannot be achieved. A further disadvantage: The stagesmust be very accurately matched to the conductor of thecable used otherwise the bolt will break at the wrongposition.From PFISTERER: Stepless shear bolts. Specialdesign feature: No predetermined breaking points in thethread. This ensures the optimum thread load for anyrange of cross-sections. The bolt always breaks evenwith the surface of the clamp body. 3. 1 32 4SICON the firststepless shear bolt.1 A standard hexagon key is used to screw a threadedstud into the hole in the stepless thrust bolt. The forceclosure is not interrupted by any steps or notches inthe bolt.2 As the SICON bolt is screwed in, the pressure plate atthe base of the bolt breaks away. The bolt now turns onthis plate; unlike with conventional bolts, no tip frictionoccurs on the conductor. The bolts torque generatesthe contact pressure almost independently of the con-ductormaterial. This way, significantly higher contactpressures are achieved with aluminium conductors.3 The SICON bolt continues to turn until the sheartorque is reached. The thrust bolt is tensioned as itis screwed in and, on reaching the shear torque, itstretches axially and breaks off. Compared with con-ventionalshear bolts, the bolt breaks very smoothly.4 The SICON bolt always breaks even with the surfaceof the clamp body. This ensures that the minimumpossible protrusion is achieved every time irrespectiveof the size of the conductor to be connected. 4. No predetermined breaking points,no weak points.Technical featuresQ Large clamping range: 10 95 mm2;25 150 mm2; 50 240 mm2; (70) 95 300 mm2;185 400 mm2; 300 630 mm2(others on request)Q Conductor channels with transverse groovesand protection against conductor oxidationQ Blind hole designed as pressure-resistant oilbarrier for oil cableQ Contact technology type-tested electricallyand mechanically according to IEC 61238-1Q Compact design: rounded edges andflat transitions, suitable for slide-on andshrink sleevesQ Suitable for aluminium- and copper conductorsQ Centric cable guide with differentcentring rings