GCK Low-voltage withdrawable switchgear (hereinafter referred to as the switchgear) is used for areas of power plants, power substations, petroleum, chemical, metallurgy, hotel buildings, airport, wharfs, broadcast televisions, communication centers and other industrial and mining enterprises & power distribution system of high-rise buildings. As a three-phase AC 50 HZ, rated voltage 400 v or below, 690V, and rated current 5000 A or below, it is used as the purposes of electric energy conversion, distribution, control of power distribution, motor control, power compensation, and other power distribution processing.