Miniature circuit breaker is characterized by advanced structure, reliable performance, strong breaking capacity, beautiful and compact appearance, etc. It is mainly used in places with AC 50HZ or 60HZ, rated voltage below 400V, and rated working current below 63A. Used for overload and short circuit protection of lighting, distribution lines, and equipment in office buildings, residential buildings, and similar structures. It can also be used for infrequent on/off operation and conversion of lines. Mainly used in various places such as industry, commerce, high-rise buildings, and residential buildings.