TeSys GV4 auxiliary contact block, for motor circuit breakers GV4. 1C/O contact, it performs Open/Close OF function or Trip alarm SD function, depending of its location in the circuit breaker. Rated for operation up to 5A/690V AC and 5A/250V DC. To be plugged inside the circuit breaker, in the right-hand cavity for OF function, in the left-hand cavity for SD function, connection by spring terminals. Multi standards certified (IEC, UL, CSA, CCC, EAC).