GCS low-voltage withdrawable switchgear is applicable to the rated working voltage of 400V (690V), AC three-phase four wire, three-phase three wire systems, as the power receiving, feeding, reactive power compensation, energy metering, lighting and motor centralized control in power plants, substations, industrial and mining enterprises and high-rise buildings of the power system. This product complies with GB7251.1 Low voltage Switchgear and Control Equipment and other standards.