Circuit Breaker, AC Contactor, Thermal Relay manufacturer / supplier in China, offering Sontuoec Stzc Series MCCB 3p 63A 100A Moulded Case Circuit Breaker, Sontuoec DC 2p 1000VDC Moulded Case Circuit Breaker (MCCB), Sontuoec Stm1 3p 125A Moulded Case Circuit Breaker MCCB and so on.