Dual power automatic switching switch, suitable for AC 50Hz, rated operating voltage 400V, rated current from 5A-4000A dual power supply system, in the case of failure of the common power supply, switching switch can be realized with the backup power supply or generator automatic switching, to ensure the reliability and safety of power supply. It can also be selectively switched between two power sources according to the needs of the load, especially for hospitals, shopping malls, banks, chemical, metallurgical, high-rise buildings and military facilities that are not allowed to power off.

The intelligent controller of the product uses a single chip microcomputer as the control core, the hardware is simple, powerful, easy to expand, high reliability, with short circuit, overload protection function, over voltage, under voltage, phase automatic conversion function and intelligent alarm function, automatic conversion parameters can be freely set in the external operation motor intelligent protection function.