Short answer: yes — if your trailer has brakes, virtually every US state requires a working breakaway system. Most states mandate breakaway devices on trailers over 3,000 lbs GVWR (some as low as 1,500 lbs), and the requirement travels with you: you must comply with the rules of the state you're driving through, not just where you registered. For any Black Series HQ trailer or similar off-road camper — all well over these thresholds with electric brakes — a breakaway kit isn't a nice-to-have. It's the law, and insurers check it after an accident.
What a Breakaway System Actually Does
If your trailer ever separates from the tow vehicle, a pull-pin lanyard attached to the truck yanks free of the breakaway switch, which connects the trailer's own battery directly to the electric brakes — locking them and stopping the runaway trailer. Federal guidance and most state laws require the system to hold the brakes for at least 15 minutes, which is why the kit includes a dedicated, charged battery rather than relying on your house bank alone.
The Three Parts — and Where They Fail
- Breakaway switch — mounted on the trailer A-frame with the lanyard clipped to the tow vehicle (never to the safety chains or hitch — it must pull free only in a true separation). Corroded switches are the #1 inspection failure.
- Battery — a small 12V pack that must actually hold charge. A dead breakaway battery = no breakaway system, legally speaking.
- Charger/maintainer — keeps that battery topped from the trailer's 12V system so it's ready on day 400, not just day 1.
Why We Stock the CURT 12V Kit
The CURT 12V Trailer Breakaway Kit packages all three components with two details that matter in the real world: a waterproof housing (breakaway batteries live in the spray zone behind the tow vehicle — corrosion kills cheap kits in a season) and a built-in LED test light, so checking the system before every trip takes five seconds instead of a multimeter session. It fits any trailer with electric brakes — including every Black Series HQ model.
Installation in Five Steps
- Mount the switch on the A-frame, forward-facing, where the lanyard has a straight pull path.
- Mount the battery box on the frame or in the front compartment, out of direct spray where possible.
- Wire the switch between battery positive and the trailer's brake circuit (blue wire).
- Connect the maintainer to the trailer's 12V supply so the battery stays charged.
- Test: pull the pin, then try to pull the trailer forward a few inches — you should feel the brakes locked. Press the LED test button before every tow.
Pre-Trip Habit
Clip the lanyard to the tow vehicle frame (not the ball or chains), leave enough slack for turns but not enough to drag, and hit the test light. That's it — a two-second habit that keeps you legal in all 50 states and keeps a 7,000-lb trailer from freewheeling down a grade.
Get the CURT 12V Breakaway Kit from our Brakes & Suspension collection — in stock and shipping from Upland, CA. While you're servicing the brake system, our chassis range covers brake shoes, drums, and hardware for Black Series HQ trailers.