The basic principle of double power distribution box is that two different power sources supply a distribution box through an intelligent double power automatic switching switch. When one power supply fails, the other power supply can continue to supply power, thus ensuring the reliability and safety of the distribution box. Two power sources can not be put into operation at the same time, only one can run and one can stand by. When the working power supply fails, the standby power supply can be put in manually or automatically.

This product meets the industry standards of IEC 60947-6-1 (1998), "Automatic Switching Electrical Appliances", GB14048.11-2002 "Automatic Switching Electrical Appliances".