MHZLE2-63H electronic leakage circuit breaker is mainly used for AC 50Hz, rated working voltage 230V (1P+N and 2P), 400V (3P, 3P+N and 4P), rated current 6A to 63A, rated operating short-circuit breaking capacity is not more than 10000A It can be used for overload, short-circuit and leakage protection in the distribution line of the electric circuit, and it can also be used for infrequent on-off and conversion of the line. Its main function is to provide indirect contact protection for dangerous personal electric shock. When other protection measures fail, this residual current circuit breaker can also be used as a supplementary protection for direct contact, but it cannot be used as the only direct contact protection. It is necessary to prevent electrical fires caused by ground fault currents, and it cannot protect against electric shocks that occur between phase lines.