ATS Dual Power Switch

STQ1-63 63A 3P CB Class Auto Transfer Switch 110V/220V - Three-Phase ATS for Industrial Equipment & Motors

The STQ1-63-3P is a CB class automatic transfer switch for three-phase 110V or 220V AC systems up to 63A, offering a cost-effective industrial solution for non-critical three-phase loads. All three poles switch simultaneously using a circuit breaker with mechanical interlock, physically preventing both power sources from connecting at the same time. When Normal Power (N/mains) fails, the unit automatically transfers to the backup supply (generator or PV inverter) in approximately 2 seconds; a brief ~2s power interruption occurs during switchover, which is acceptable for most industrial and commercial equipment. The unit automatically reverts to Normal Power priority once mains is restored. With a maximum load capacity of approximately 22kW across three phases, the STQ1-63-3P is well suited for powering industrial equipment, commercial elevators, three-phase motors, and other heavy loads where PC class switching speed is not required.

Samples available · OEM pricing on request · Ships worldwide