Used in power plants, substations, industrial enterprises and other power users, as ac 50 to 60 hz, the rated working voltage of 380 V, rated current 3150 a power distribution system, as power, lighting and electrical energy conversion, distribution and control of power distribution unit.

Products with high ability of piecewise dynamic thermal stability, novel structure, reasonable, electrical scheme is practical, series usability is strong, high protection grade, etc. Can be used as update products.