GCS LV draw-out switchgear (hereinafter referred to as the switch cabinet) is a new product designed and developed by two joint design teams of the original power industry department and the ministry of mechanical industry in the late 1990s. It conforms to the national conditions, has the high technical performance index, can adapt to the development of the power market and can compete with the existing imported products, has received the attention and choice of the vast power users. The switch cabinet is suitable for three-phase AC 50Hz, rated voltage 380V(400V), rated current 4000A and the following three-phase four-wire system and three-phase five-wire power system. Widespread power plants, substations, industrial and mining enterprises, building hotels, airport, dock and other power users as electricity distribution, transformation, control and reactive power compensation, it contains power center (PC) and the motor control center (MCC) function, and can be designed into a fixed cabinet and drawer type mixing tank, can meet the needs of different power supply. The switch cabinet has the characteristics of high breaking capacity, good dynamic thermal stability, novel structure, perfect electrical scheme series and high protection level. It is an ideal replacement product.