SHIQ3 type A.T.S intelligent dual power automatic transfer switch (hereinafter referred to as the switch), is a kind of emergency continued power switch, the switch is composed of circuit breaker and intelligent controller. This product employs the latest microcomputer control system as core; it has advantages of electromagnetic compatibility, strong immunity, work reliably and stably for long term, when equipped with a large screen LCD back light disply, it can provide users with favorable man_manchine interface, convenient and intelligent operation. Therefore, it is an ideal new type of automatic transfer switching equipment whit mechanical-electrical integration.