1
Owner’s Manual
WARR
ANTY
REGISTR
ATION
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PR Series
Precision-Regulated DC Power Supplies
Models:
PR3UL, PR4.5, PR7, PR10, PR12, PR15, PR20,
PR25, PR30, PR40, PR50, PR60
For use in 120V/60Hz environments
Overview 1
Features 2
Installation 2
Current Ratings
3
Troubleshooting 3
Specifications 4
Warranty and Warranty Registration 4
1111 W. 35th Street, Chicago, IL 60609 USA • www.tripplite.com/support
Copyright © 2013 Tripp Lite. All trademarks are the sole property of their respective owners.
Overview
Tripp Lite PR series DC power supplies convert standard 120 Volt AC (VAC), 60Hz power into
regulated 13.8 Volt DC (VDC) power; (12V DC output, nominal). PR series models are ideal for
powering a wide range of equipment designed to run on 12V DC power. PR series models can
also be used as general-purpose test bench power sources.
BATTERY CHARGING NOTE
DO NOT use PR series models rated at 12 amps and lower for battery charging. If you connect
a battery to any of these models with the unit NOT plugged into a live 120 Volt AC outlet or the
unit plugged in but turned OFF, you may burn out the unit because of reverse current flow.
You MAY use PR series models rated at 15 amps and higher for battery charging. However, the
battery must be separately fused with a fuse not greater than the value of the unit’s nameplate
amperage rating. Otherwise, the battery can cause current flow greater than the unit’s
amperage rating back into the unit under certain circumstances and may burn out the unit.
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