BM7 series high marks broken small circuit breaker is the company launched in 2008, high fault type products, applied to ac 50 hz, rated voltage 400 v and below and rated current under 63 a and office buildings, residential lighting, power distribution line, and similar places with overload and short circuit protection function and isolation function, can also be used for infrequent operation under normal conditions. The circuit breaker is suitable for non-professional use (wet hands are not allowed to operate) and is non-repairable.