... as breaker) is suitable for the circuit of AC50Hz with rated voltage 380V ,690V at rated current 400A~6300A ... supply equipment from overload, under-voltage, short-circuit and single-phase earthing with intelligentized and selective protection functions, the breaker can ... varieties of electrical devices as Air Circuit Breaker,Mini Circuit Breaker,Moulded Case Circuit Breakers,Leakage Breaker,A.C ...