E4CB miniature circuit breaker applies to electromagnetic design which possesses the functions of overload and short circuit protection. It is widely used for illumination and distribution in industry and commerce with its characters of pleasing out-look, light weight, reliable performance, high breaking capacity for rated current under 63A(6KA) and for current from 80A, the capacity is 10KA,easy and clearly for operation etc. It complies with the standard of IEC60898.