Emax Low voltage air circuit-breakers - ABB Download Center

1SDC200147F00015c) Electrical signalling of circuit-breaker racked-in/testisolated/racked outIn addition to mechanical signalling of the circuit-breaker position,it is also possible to obtain electrical signalling using 5 or10 auxiliary contacts which are installed on the fixed part.It is only available for withdrawable circuit-breakers, for installationon the fixed part.The auxiliary contacts take on the following configurations:– 5 contacts; set comprising 2 contacts for racked-in signal, 2contacts for racked-out signal, and 1 contact to signal thetest isolated position (main pliers isolated, but sliding contactsconnected).– 10 contacts; set comprising 4 contacts for racked-in signal, 4contacts for racked-out signal, and 2 contacts to signal thetest isolated position (main pliers isolated, but sliding contactsconnected).Reference figure in electrical circuit diagrams:S75I (31-32)S75T (31-32)S75E (31-32)51SDC200148F0001ABB SACE 5/13