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Powering the RV Adventure

ATS 503 Automatic Line/Generator Transfer Switch

OWNER OPERATION GUIDE

Visit our website at www.parallaxpower.com

Congratulations on the purchase of your new Parallax Power

Supply product!

The Parallax ATS 503 automatic line/generator transfer switch has

been designed to give safe, reliable, and maintenance-free service.

We hope it provides many years of enjoyment.

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ListedforRVuseintheU.S.A.andCanada

011-0503-100 Rev C

Summary of content (4 pages)

PAGE 1
Powering the RV Adventure ATS 503 Automatic Line/Generator Transfer Switch OWNER OPERATION GUIDE Visit our website at www.parallaxpower.com Congratulations on the purchase of your new Parallax Power Supply product! The Parallax ATS 503 automatic line/generator transfer switch has been designed to give safe, reliable, and maintenance-free service. We hope it provides many years of enjoyment. Listed for RV use in the U.S.A.
PAGE 2
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.
PAGE 3
FROM SHORE LINE To operate appliances from shore line power, plug in the shore line cable to the supply pedestal at the campground or dock. The ATS automatically connects all AC load panel appliances to shore line power. FROM INVERTER OR GENERATOR To operate appliances from the alternate 120/240VAC power source, energize (power on) the alternate power source connected to the ATS 503 “GEN” input terminals. When using the ATS 503 with a listed RV generator, a time delay is usually needed.
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LED INDICATORS When operating from a Generator or Alternate source input, additional LEDs on the logic circuit board indicate:    Low voltage power supplies are operational Green LEDs D4 & D6 indicate relays are in shore line position Yellow LEDs D5 & D7 indicate relays are in “Generator” position MOUNTING LOCATION The ATS 503 is designed for indoor use only. DO NOT mount in harsh environments; avoid areas where high levels of dust, dirt, or moisture may occur.