TeSys GV electrical trip unit, MX shunt trip, 380-415V AC 50Hz / 440-480V AC 60Hz, for motor circuit breakers GV4.It trips the circuit breaker when the control voltage is applied in limits 0.7-1.1 Uc with an impulse duration greater than 20ms or a maintained signal.To be plugged inside the circuit breaker, connection by spring terminals.Multi standards certified (IEC, UL, CSA, CCC, EAC), Green Premium compliant (RoHS/REACh).