Identify CURT Trailer Breakaway Switches, Batteries & Cases
A trailer breakaway system is intended to apply electric trailer brakes if the trailer separates from the tow vehicle. The switch and pull cable, dedicated battery, charger and battery enclosure are distinct service parts. If only one component is missing or damaged, identifying the correct CURT part number can prevent buying an entire kit unnecessarily.
Find which component needs replacement
Switch and cable52010 is a breakaway switch with a 48-inch cable. 52011 is a separate replacement switch listed for CURT Soft-Trac 1 and 2 systems. The 52020 is a 48-inch pull cable and pin only, not a complete switch. Check the original switch and system model before selecting either.
Battery and charging52023 is CURT's 12V replacement breakaway battery, while 52025 is the separate battery charger for compatible Soft-Trac systems. The 52022 and 52027 are differently shaped battery enclosures. These parts should not be assumed interchangeable merely because they belong to the same general system.
CURT breakaway service-parts identification chart
| MPN | Part type | Component | Important detail |
|---|---|---|---|
| 52010 | Switch assembly | 48-inch breakaway switch | Switch and pull-cable mechanism |
| 52011 | Switch assembly | Soft-Trac breakaway switch | Replacement switch for identified Soft-Trac 1 and 2 systems |
| 52020 | Cable and pin only | 48-inch cable and pull pin | Does not include the complete switch or battery system |
| 52022 | Battery enclosure | Large battery box | Approx. 6 W × 5½ H × 3¼ D in; check included hardware |
| 52027 | Battery enclosure | Compact sealed battery box | Approx. 5 W × 3⅜ H × 3¾ D in; gasketed lid |
| 52023 | Replacement battery | 12V breakaway battery | Compatible CURT trailer breakaway system battery |
| 52025 | Charger module | Breakaway battery charger | For compatible CURT Soft-Trac 1 and 2 battery systems |
Replacement battery boxes are not complete breakaway kits. CURT 52022 and 52027 are listed as battery-case parts, with different housings and mounting arrangements. Do not assume the replacement case includes a 52023 battery, a 52025 charger or a switch unless those items are explicitly confirmed in the package contents for the exact listing.
How the components work together
In a correctly installed breakaway system, a dedicated charged battery provides emergency power to the electric trailer brakes when separation pulls the switch pin. The charger maintains the battery during normal use. The tow vehicle attachment and cable must be positioned to operate the switch as designed without interfering with normal trailer turns.
A breakaway system does not replace a serviceable hitch coupler, safety chains, trailer brakes, or the normal brake controller. The system should be inspected and tested in accordance with the trailer and brake manufacturers' instructions.
What to verify before replacing a component
- Identify the original system. Record the CURT kit model and the individual service part number, especially when replacing a Soft-Trac switch or charger.
- Decide whether the switch or only its pin is damaged. A complete 52010 or 52011 switch is different from 52020's cable-and-pin replacement. Compare the original connectors and mounting.
- Check the battery. CURT 52023 is listed for compatible 12V breakaway systems; confirm physical size, connections, charge state and the brake requirements.
- Compare enclosure dimensions. CURT 52022 is approximately 6 × 5½ × 3¼ inches; 52027 is approximately 5 × 3⅜ × 3¾ inches. Their case construction and mounting differ. These are outside-case measurements, not universal battery-fit guarantees.
- Match the charger. CURT 52025 is a charging component, not a replacement battery or brake controller. Confirm compatibility with the original system wiring.
- Test the repaired system correctly. Use the manufacturer's procedure to verify battery readiness and emergency brake application; have a qualified trailer technician inspect damaged wiring, mounting or braking components.
Find matching CURT replacement components
Each card links to the corresponding UsedRVParts.ca product listing. Check the condition and current availability before ordering. The store offers both brand-new and used parts; eligible used inventory may be inspected or collected in Kelowna by appointment.
CURT 52011
Soft-Trac breakaway switch
Replacement switch for identified Soft-Trac 1 and 2 systems
View exact part and condition
CURT 52020
48-inch cable and pull pin
Does not include the complete switch or battery system
View exact part and condition
CURT 52022
Large battery box
Approx. 6 W × 5½ H × 3¼ D in; check included hardware
View exact part and condition
CURT 52027
Compact sealed battery box
Approx. 5 W × 3⅜ H × 3¾ D in; gasketed lid
View exact part and condition
CURT 52023
12V breakaway battery
Compatible CURT trailer breakaway system battery
View exact part and condition
CURT 52025
Breakaway battery charger
For compatible CURT Soft-Trac 1 and 2 battery systems
View exact part and conditionRelated breakaway system references
If you need a complete system rather than individual service components, look for CURT breakaway kits identified by the trailer's brake and axle requirements. For a different manufacturer's cable and switch design, our Fastway ZIP breakaway cable and switch guide compares those specific parts. Manufacturer fitment must be confirmed before substituting components across systems.
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