The EM series molded case circuit breakers from 10A to 1600A are divided into 6 frames: 63A, 125A, 250A, 400A, 800A, 1600A, which are also actively invested in the development of a full set of related accessories. This series of products has a small volume, high breaking height, stable performance, complete accessories, convenient and other features, widely used in AC 50Hz/60HZ rated operating current from 10A to 1600A distribution network, mainly used to allocate power, and line power supply equipment overload, short circuit and undervoltage circuit protection. It can be used as an infrequent conversion of the circuit under normal conditions. Circuit breakers rated at 400A or less in shell frame rating can be used for infrequent activation of the motive, disconnection during operation and motor overload, short circuit and undervoltage protection. Acquired 3C certification.