CAP2 series automatic transfer switch electrical appliances (hereinafter referred to as "assembly") Set as a PC grade specialized automatic transfer switch appliance, mainly used for AC Current 50Hz, rated voltage 400V, rated working current up to 3200A Two neutral grounded power supply systems (common power supply and backup power supply) In common power sources and power generation sources, due to an abnormality in one power source Switch between power sources to ensure the reliability and safety of their power supply Sex.