CURT Softtrac I Breakaway Kit — 12V Rechargeable Breakaway System with Lockable Case, 3-Axle Rated

The CURT Softtrac I Breakaway Kit (52040) is a complete, DOT-compliant system that triggers electric trailer brakes with a rechargeable 12-volt battery and lockable case.

When a trailer separates from its tow vehicle, an effective breakaway system stops the trailer’s wheels and helps prevent secondary accidents. The CURT Softtrac I kit includes the core components you need: a 12-volt, 5-amp rechargeable battery, a nylon breakaway switch with a 48" lanyard, a charger, and a weather-resistant, lockable top-load case. All parts are built to meet DOT breakaway and holding requirements and suit trailers with up to three axles.

How does the Softtrac I activate my trailer brakes?

The included nylon breakaway switch is secured to the tow vehicle and attached to the trailer by a 48" lanyard. If the trailer separates, the lanyard pulls the switch, completing the circuit to the 12-volt battery so the trailer’s electric brakes engage. The system is simple mechanically and designed for fast, reliable activation when needed.

• Nylon breakaway switch with 48" lanyard for most vehicle-trailer setups
• Direct electrical connection to trailer electric brakes for immediate response
• Designed for trailers with up to three axles

What components are included and how do I keep the battery charged?

The kit ships with a fully integrated set: a 12V, 5A rechargeable battery, a compatible charger, the breakaway switch and lanyard, plus a lockable case. The charger plugs into standard outlets to maintain battery readiness between uses; periodic charging prevents sulfation and ensures the battery holds sufficient power.

• 12V, 5A rechargeable battery sized for breakaway duty
• 12V battery charger included for convenient replenishing
• Top-load, screw-tight lid with rubber gaskets to protect wiring

How does the lockable case protect the system?

The kit’s plastic, lockable top-load case shields the battery and switch from weather and tampering while keeping connections accessible for inspection. Its screw-tight lid and gasket reduce moisture intrusion so wiring stays reliable and corrosion is minimized. The lock feature also deters theft and unauthorized access when parked or stored.

• Durable, rust-free plastic construction for long outdoor life
• Screw-tight lid with rubber gaskets to maintain wiring integrity
• Lockable top-load design deters theft and accidental exposure

Will this kit fit my trailer and how hard is installation?

The Softtrac I is built to fit most trailers using electric brakes and is rated for up to three axles. Installation requires mounting the switch and routing wiring to the trailer brake circuit; the included lanyard length accommodates a wide range of hitch configurations. Basic wiring skills are helpful, and following DOT wiring guidelines ensures correct operation.

• Compatible with trailers equipped with electric brakes (up to three axles)
• 48" lanyard accommodates common hitch distances and coupler types
• Straightforward wiring; professional installation recommended if unfamiliar with trailer electrical systems

Who is this for: The CURT Softtrac I Breakaway Kit is aimed at trailer owners who want a tested, DOT-compliant breakaway solution without complex electronics — ideal for utility trailers, boat trailers, RVs, and other vehicles using electric drum brakes up to three axles. It suits DIY installers with basic wiring knowledge and fleet managers who need a compact, rechargeable system with theft-resistant protection.