GGD3 series are the low voltage switchgear manufactured by Zhongshan Mingyang Electric Co., Ltd., which is suitable to the power distribution system with AC of 50Hz, rated working voltage of 380V(660V) and rated current of 2500A and below of power consumers such as substations, power station, industrial and mining enterprises, etc. for the electrical energy conversion, distribution and control of power, lighting and power generation and distribution equipment.