... ,OEM all made. Application: JYW1 (DW45) series air circuit breaker (hereinafter referred to as breaker) is suitable for the ... mainly used to distribute electric energy and protect circuits and power-supply equipment from overload, under-voltage, short-circuit and ... varieties of electrical devices as Air Circuit Breaker,Mini Circuit Breaker,Moulded Case Circuit Breakers,Leakage Breaker,A.C Contactors ...