Cummins RA 100 Amp Indoor Automatic Transfer Switch

Keep your home powered when the grid goes down with the Cummins RA 100 Amp Indoor Automatic Transfer Switch. This grey unit monitors utility power 24 hours a day, 7 days a week, so it's ready to shift your load when outages hit. The integrated branch circuit breaker panel offers 20 spaces and works with Square D QO branch circuit breakers, making circuit planning a breeze. Silver alloy contacts resist burning and pitting, and the mechanically interlocked contactor prevents both power sources from connecting at once. Solderless screw-type terminals make external connections straightforward. Built for 120/240V single-phase systems, it's a smart pick for residential and light commercial standby power setups, and its NEMA 1 enclosure keeps things neat and protected.