CURT Breakaway Kit for Trailers — 12V/5A Rechargeable Battery, Side-Load Case with Push-to-Test LED

The CURT 52042 side-load push-to-test breakaway kit is a complete, DOT-compliant system that supplies a 12V/5A rechargeable battery, side-load weather-resistant case, and a nylon breakaway switch to activate trailer electric brakes if the trailer becomes disconnected.

When towing, the last thing you want is to be caught unprepared; CURT’s 52042 kit is designed to give you a dependable, easy-to-check solution for trailers with electric brakes. The kit combines a visible push-to-test LED status indicator, an onboard charging function, and durable mounting hardware so you can confirm readiness quickly and recharge the battery without removing it from the case. Tested to meet DOT holding and breakaway requirements, this system works for trailers with one to three axles and is built to resist the elements.

How do I know the battery is ready before each trip?

CURT’s integrated push-to-test battery case uses LED indicators to display battery condition at a glance. Press the test button and the lights show whether the battery is charged, currently charging, or needs attention, so you don’t have to remove or measure the battery manually.

• LEDs indicate charged, charging, or low battery status
• Push-to-test button on the case for quick checks
• Onboard charger allows charging in place without battery removal
• Indicator reduces pre-trip guesswork and delays

What components come with this breakaway kit and how are they used?

The kit includes a 12V 5A rechargeable battery, a side-load weather-resistant battery case with push-to-test function, a nylon breakaway switch, and the necessary mounting hardware. Together these parts give you a complete breakaway activation system that mounts to your trailer and connects to your electric brake circuit.

• 12V / 5 amp rechargeable battery for multiple activations
• Side-load plastic case with built-in charger and LED status lights
• Nylon breakaway switch to mechanically detect trailer separation
• Mounting hardware for secure installation on a variety of trailers

Is this kit compatible with my trailer and does it meet safety rules?

Yes — the CURT 52042 is designed for trailers equipped with electric brakes and supports trailers with one to three axles. The system is tested to meet DOT breakaway and holding requirements, making it suitable for many common towing setups.

• Works with trailers operating electric trailer brakes
• Appropriate for single- to three-axle trailers
• Tested to DOT standards for holding and breakaway situations
• Durable materials resist weather exposure when properly mounted

How does the side-load design and onboard charger improve use?

The side-load battery case simplifies battery access and replacement while keeping the charging port and LED indicator visible. The built-in charger lets you top up the battery without removing it from its weather-resistant housing, saving time and reducing wear on connectors.

• Side-load case provides easy battery insertion and removal
• Built-in charger allows on-trailer charging for convenience
• Visible LEDs make pre-trip inspections faster and more reliable
• Plastic housing is weather-resistant for extended outdoor use

Who is this for? The CURT 52042 breakaway kit is ideal for trailer owners and professional haulers who use electric brakes and want a convenient, compliant safety system they can verify quickly before towing. It's a practical choice for RV owners, utility trailers, boat trailers, landscapers, and contractors who tow single- to three-axle trailers and prioritize straightforward installation, visible battery status, and the ability to recharge the battery while it remains mounted.