Mini circuit breaker has novel structure ,reliable performance, high breaking capacity, pleasing outlook and small size. Its case and items are adopted by high fireresistant and shockproof plastics, It mainly used in the building office, house and similar building for illuminating at AC 50HZ(60 HZ),rated voltage below 400V ,rated current below 100 A,distribution circuit and equipment overload,short circuit protection .It can also be used for unfrequent switch over of the circuit under normal conditions .This product conforms to the requirement of IEC 60898&GB 10963 standards.