Pro Series® 50-85-315 - Breakaway System for 1 to 3 Axle Trailers

00 reviews / Item # mpn1790372
Pro Series® - Breakaway System for 1 to 3 Axle Trailers
Pro Series® - Breakaway System for 1 to 3 Axle TrailersPro Series Authorized Dealer
● In Stock (10) - Ships within 24 to 48 hours
Add To Cart
Have a Question? 800.505.3274
Ask a Specialist: Live Chat
Authorized Dealer:Pro Series
Low Prices. Price match guarantee
Guaranteed Fitment. Always the correct part
In-House Experts. We know our products
Easy Returns. Quick & Hassle Free

Product Details

Learn everything you want to know about this product
to make an informed purchase.

Pro Series Accessories

Universal Breakaway System for 1 to 3 Axle Trailers (50-85-315) by Pro Series®, with Electric Brakes, Includes Battery Box, 5 Amp Battery with Push to Test LED Test Meter and Breakaway Switch. Trailers with electric brakes are required to have a breakaway system that applies the brakes in the unlikely possibility of coming loose from the tow vehicle at speed. These systems use a small lead-acid battery and a switch with a lanyard to the tow vehicle frame. One-year warranty.

Pro Series


  • Applies trailer brakes if the trailer comes unhitched
  • For use on 1, 2 or 3 axle trailers equipped with electric brakes
  • Weather/corrosion resistant, heavy-duty polymer case to protect battery and charger
  • Quick and easy to install
  • Breakaway switch w/ lanyard
  • 5 Amp/hr. battery
  • Battery box
  • 1 year limited warranty

The law requires a breakaway system if your trailer has electric brakes. Simply, this means that if your trailer coupler separates from the ball, a lanyard attached to the tow vehicle will pull a pin out of a switch. This connects a small battery directly to the trailer brakes. This way, your errant trailer won't continue down the road until it smashes into something, but simply brake smoothly to a halt.

This breakaway system is a vital safety system and should receive regular maintenance, including charging the small battery. Experts recommend replacing the entire breakaway system, battery, switch and wiring regularly every 3-5 years. The simplest place to mount the battery box is on the tongue of the trailer, but where isn't as important as long as it works. You'll need to make electrical connections to the brake circuit, a chassis ground and to the trailer 12V feed for a charger, if you install one.

Pro Series offers the best values and one of the widest product lines in the towing market. A diverse selection of products including 5th wheel, gooseneck, weight distribution and receiver hitches, jacks, couplers, winches, trailer brake controls, trailer breakaway systems and cargo management items are a few of the items available from an extensive system of Dealers and installers throughout the U.S. and Canada. Pro Series products are made by the best names in the business and balance performance and product features with price.

Part Number:
Pro Series® - Breakaway System for 1 to 3 Axle TrailersPro Series® 50-85-315 - Breakaway System for 1 to...    $31.11
00 reviews
Add To Cart

All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only.
It is neither inferred nor implied that any item sold by, is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.