CJL1-125 Type Residual Current circuit breaker (RCCB)(without overcurrent protection)ensure electrical safety in homes and similar situations, such as offices and other buildings as well as for industrial applications by protecting electrical installations against leakage Current reach to 30mA. Once a fault is detected, the Residual Current circuit breaker automatically switches off the electrical circuit to prevent risk to the people. Warranting reliability and safety for people and assets, RCCBs are equipped with AC, A and B type. The AC type is a common type use for homes, A type with pulse DC protection, B type is a multipurpose protection RCCB, it can be use in the highest requirements situations. normally the rated current is 16, 25, 32, 40, 50, 63, 80, 100A, leakage current protection is 30mA, 100mA, 300mA and it suitable for rated voltage 230V at two poles, 400V at four poles, rated current n line 63A. frequency is 50/60Hz. according to IEC61008/EN61008 standards.