GGD type AC LV distributing switchgear (LV complete switchgear ), is the Department of energy to promote technological progress of China's low voltage distribution industry, accelerate the low-voltage power distribution switchgear equipment renewal for the purpose of development, technology progress in 1991 issued by the project. By the Department of energy joint design of low voltage switchgear development group (referred to as NLS) to complete the design and development, and in 1992 October passed the ministerial level identification presided over by the Department of energy. At present in the national scope has been widely used. Applied to power plant, substation ,industrial enterprises and other power users of AC 50HZ,rated working voltage 380V, rated current up to 3150A of power distribution system,as power ,lighting and power distribution equipment for power conversion,distribution and control purposes. Products with high breaking capacity, dynamic thermal stability, electrical scheme is flexible, combination of convenience, series , strong practicability, novel structure, high level of protection. The product meets standard requirements od IEC60439-1 and GB 7251.1 ,etc.