Dual Power Automatic Transfer Switch?Ats 2P 63A 110V, Cb-2P 63A 110V ATS is mainly used in emergency power supply system?it automatically switch the load circuit from one power source (normal power) to another power source(reserve power), ensuring the continuous and reliable operation of important loads.Usually suitable for household emergencies, firefighting, elevators, etc. 1.Working Principle:When the main power(the grid) goes off,ATS will transfer to reserve power(generator),to make sure the continuous and reliable operation of loads.Generator should be on, or ATS will not transfer.when main power goes on, it will transfer back,priority main power supply. 2.CB Type, means this ATS is composed of two circuit breakers and mechanical interlocking.It can protect load from short circuit, overload, lack of phase, under voltage. 3.Rated Current:63A ;Rated Voltage :110V ;Rated Frequency:50/60Hz 4.Transfer Speed:Less than 2s. Suitable for household emergency power supply. 5.Installation Method:Fix with screws.