Planning with SIVACON 8 PS - Siemens

Planning with LDA/LDC4.2 System components4.2.11.3 Tap-off units with circuit-breakersOn tap-off units with circuit-breakers you can select the switching capacity, the number ofactively switched poles, the type of operator control and the signalling options:● Rated currents from 80 A to 1250 A● 3 or 4-pole designs● Switching capacity: normal, standard or high (see Technical data)Circuit-breaker with manual operating mechanismThis type of tap-off unit has a circuit-breaker which can be controlled from the outside usinga handle.Degree of protectionThe tap-off units have IP54 degree of protection.Opening the tap-off unitThe contact compartment and the copper connections between the contact mechanism andthe circuit-breaker are encapsulated in a finger-proof casing. The cover can only be openedif the breaker has been deactivated. This ensures voltage-free load when the cover isremoved.Cable connectionOn the load side, the outgoing cables are routed directly via the circuit-breaker or optionallyvia terminals. The PE/PEN conductor is fixed to a bolted connection as appropriate for thecross section. Single-core or multi-core cables can be fed in from the side or via the frontface. The sectional flange plate facilitates the laying of the cables.Circuit-breaker with door handle, also available with motor driveThis version has a motor drive instead of a door handle.Figure 4-11Circuit-breaker with door handle, also available with motor drivePlanning with SIVACON 8 PS124 Planning Manual, 10/2007, A5E01541101-01