Cummins RA 400 AMP Outdoor Automatic Transfer Switch

Keep your power running smoothly when the grid goes down with the Cummins RA 400 AMP Outdoor Automatic Transfer Switch. This grey unit uses a mechanically interlocked contactor, so it switches over to generator power with a dependable, secure connection. It monitors utility power 24 hours a day, which means you can count on it to keep watch while you go about your day. Solderless screw terminals make external power connections straightforward, and high-pressure silver alloy contacts resist rusting and pitting. The NEMA 3R aluminum enclosure stands up to the weather, and 120/240V single-phase compatibility makes it a good fit for residential or light commercial applications. Backed by a 2-year limited warranty, it's a practical choice for your backup power setup.