This residual current operated circuit breaker is availabel in the circuit of AC 50Hz, rated voltage 400V and rated current 63 ( 100) A, It has the protection function to leakage, overload and short-circuit, and can add the over-voltage protection function according to users. Rated working Voltage: AC230/ 400V Rated working current: 63, 80, 100A Shell rank rated current: 100A Residual operating current: 30, 100, 300mA Residual non-operating current 15, 50, 150mA