... . Quick Delivery 4. ISO9001,CCC Approved Wankong molded case circuit breaker for AC 50Hz, rated voltage to 400V, rated current from 16A ... to 1250A of the circuit breakers in general for distribution in this series, of which Y, J, G- ... equipment overload, short circuit and under voltage protection; right motor for overload, short circuit and under voltage protection. Under normal circumstances ...