RV Transfer Switches

ATS 503 Automatic Line/Generator Transfer Switch

www.parallaxpower.com

GENERAL INFORMATION The ATS 503 is designed to switch the on-board 120-volt appliances to an alternate 120VAC power source such as an inverter or generator when the alternate power source is energized.

The ATS 503 features include a rugged galvanized steel enclosure, solid state printed circuit board construction, heavy duty PCB mounted relays, a 20-30 second generator time delay, time delay Enable/Disable, and compression lug wiring terminals with 5/32” hex drive set screws for ease of wiring and safe, reliable operation. The default power source is the shore line or utility power input “side” of the switch.

The alternate power source or “Generator” input side of the switch will “take command” of the switch when the alternate source is energized.

http://www.parallaxpower.com/transfer-switches

• owner operation guide - ats 503.pdf

• product specification sheet.pdf