Automatic Power Selector

The Automatic Power Selector (APS) is a solid state device which enables installation of a seamless, redundant power system for critical electronic loads. It selects the higher voltage of two isolated DC power sources and routes power to the load. Should one source falter or fail, the other will automatically supply the load with no transfer delay, operation continues uninterrupted.

Easy installation, two independent power sources are wired to the APS and routed in a single output to the vital load.



Model Voltage Rating Peak Load Current Size Weight
APS-70 6-50 VDC, neg. ground 70 amps 3.25″ x 4.5″ x 3.1″ 2 lbs.
APS-160 6-50 VDC, neg. ground 160 amps 9.0″ x 4.5″ x 3.1″ 5 lbs.

Voltage Rating: 6-50 VDC, neg. ground


Automatic Power Selector, mobile mount, wires two power sources together for DC Power Back-Up, 12V DC, 24V DC, 48V DC, 70 Amps to 160 Amps typical application by Newmar Powering the Network