JLM6L series molded case circuit breaker with residual current protection, rated working voltage is up to 400V, suitable for the distribution circuit with AC 50Hz, rated working current up to 800A, as leakage protection. It can be used to prevent equipment from insulation damage, fire hazard due to ground fault. Also be used to distribute electric energy and protect circuits, power supplies and protect electrical equipment from overload, short circuit, under voltage and other faults. It can also protect motors from infrequent starting, overload and short circuit.