Complete trailer breakaway system with battery, charger, switch, and protective clamshell box. Designed to provide emergency trailer braking power if the trailer separates from the tow vehicle.
Part Number: J-BRTK12V Breakaway System5Ah Battery Included
Overview
This trailer breakaway kit is a complete emergency braking safety system for trailers equipped with electric brakes. The kit includes a 5Ah battery, breakaway switch, battery charger, clamshell battery box, and mounting bolts. If trailer separation occurs, the breakaway switch activates the onboard battery so the trailer brakes can apply independently of the tow vehicle.
R&P Service Insight
A working breakaway system is a critical safety item on electric brake trailers. The battery must be charged, the switch must pull cleanly, and the pin must be reinserted after testing so the brakes are not left engaged.
Emergency Function: The switch activates trailer brakes if the trailer separates from the tow vehicle.
Battery Readiness: The onboard 5Ah battery supplies emergency braking power independent of the tow vehicle.
Post-Test Check: After testing, confirm the pin is fully reinserted and the trailer brakes are released.
R&P Knowledge Hub
System Function: A breakaway system applies trailer braking when the breakaway cable pulls the pin from the switch during a separation event.
Vehicle / System Fit: Intended for trailers equipped with electric brake systems, including many utility, equipment, enclosed, dump, and car hauler trailers.
Installation Notes: Verify the trailer has an electric brake system and confirm proper switch mounting, cable routing, battery connection, charger wiring, and ground before towing.
Performance Insight: The onboard battery supplies emergency braking power when tow vehicle power is no longer available.
Application Reference: This listing describes a breakaway safety system for compatible electric brake trailer applications.
What This Means: This listing is for a complete trailer breakaway kit, not a guaranteed OEM-branded item unless specifically stated and verified.
Before Ordering: Verify trailer brake type, wiring layout, battery box mounting location, switch location, cable routing, and included components before installation.
R&P Repair Insight
Breakaway systems are often replaced when the battery no longer holds a charge, the switch is damaged, the box is cracked, or wiring has been overheated from a pin being left pulled. A correct installation depends on clean wiring, a charged battery, and a switch cable that can pull straight during separation.
Switch Check: Confirm the pull pin moves freely and fully seats after testing.
Battery Check: Keep the onboard battery charged and inspect terminals for corrosion or loose connections.
Heat Damage Check: A pulled pin left out can keep brakes engaged and may overheat the switch or wiring.
Features
Complete Breakaway Kit
Includes the core components needed for a trailer breakaway emergency braking system: battery, switch, charger, battery box, and mounting bolts.
5Ah Emergency Battery
Onboard 5Ah battery supplies braking power when the breakaway switch is activated.
Pull Pin Breakaway Switch
Cable-and-pin style switch activates the emergency braking circuit when the trailer separates from the tow vehicle.
Protective Clamshell Box
Plastic clamshell battery box helps protect the battery and related breakaway components from normal trailer service exposure.
Specifications
Specification
Detail
Part Number
J-BRTK
Brand
R&P Carriages / trailer breakaway safety kit
Product Type
Trailer breakaway kit
Application
Electric brake trailer emergency braking system
Battery
5 Amp Hour / 5Ah
Voltage
12V system
Switch Type
Pull pin breakaway switch
Box Type
Plastic clamshell battery box
Fitment / Application
Category
Details
Vehicle / System
Trailers equipped with electric brake systems
Primary Fit
Utility, equipment, enclosed, dump, and car hauler trailer applications
Axle Setup
Single, tandem, and triple axle trailer applications where the brake system and wiring are compatible
Notes
Verify electric brake compatibility, wiring configuration, battery mounting location, and breakaway switch routing before installation.
Included Components
Quantity
Item
1
5Ah Battery
1
Breakaway Switch
1
Battery Box — Plastic Clamshell
1
Battery Charger
2
Mounting Bolts
Wiring Diagram
Breakaway kit wiring reference for the J-BRTK trailer emergency brake safety system. Final wiring should be verified against the trailer’s existing brake wiring, junction box layout, ground path, and plug configuration before towing.
How the System Works
Breakaway Switch Activation
The breakaway switch mounts to the trailer frame. If trailer separation occurs, the cable pulls the pin to activate emergency trailer braking.
Do Not Leave Pin Pulled
Leaving the pin pulled can keep trailer brakes engaged, create heat buildup, and damage the switch or wiring.
Critical Safety Note
Emergency Use Only: The breakaway system is designed for emergency activation if trailer separation occurs.
Pin Position Matters: If the pin is pulled and left out, the brakes can remain fully engaged. This creates continuous electrical load and heat buildup, which can melt the switch and damage wiring.
Best Practice: After testing, always confirm the pin is reinserted and the trailer brakes are released before towing.
Verify trailer brake type, 12V wiring, charger wiring, ground path, switch mounting, cable routing, battery condition, and included components before installation. Wiring diagrams are installation references only; final wire colors and connection points can vary by trailer and component configuration.
Selected from R&P customer feedback for Trailer Axle / Running Gear products and related trailer service.
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