Check the listing for details. 1PC Industrial Automatic Transfer Switch 160A 4P 110/220V Grid to AC Generator. Condition: New. Listed at 103.01 USD. Description:This Dual Power Automatic Transfer Switch (ATS) is a device used to automatically switch between two power sources and is commonly used to ensure continuity and reliability of power supply. The ATS plays a vital role in generator applications, especially in standby power systems.Industrial, residential and various occasions where continuous power failure is not allowed. a. Manual /Automatic When switching between two power supplies, if special circumstances do not require automatic switching, you can also set yourself to manual switching. b. Modified Wiring Port The two-in-one-out connection is more simple and convenient, which greatly saves time. Overload protection, short circuit protection, c.