This standard applies to our company produced HO212/214-63 residual current circuitbreaker with over current protection.The circuit breaker has good current limitingperformance, and can accurately protect the line from overload, short circuit, leakagecurrent and other fault hazards.HO212/214-63 series circuit breakers (hereinafter referred to as circuit breakers) aresuitable for AC 50/60Hz, rated voltage not exceeding 415V, rated current to 63A, toprotect line facilities and electrical equipment in buildings and similar places, and alsofor infrequent on-off operations.