Electric Over Hydraulic EOH HD Breakaway Kit Battery Box 300-028522
Electric Over Hydraulic EOH HD Breakaway Kit Battery Box 300-028522 is backordered and will ship as soon as it is back in stock.
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Electric Over Hydraulic EOH HD Breakaway Kit Battery Box 300-028522
Description
Description
EOH Breakaway Battery Box
The Electric Over Hydraulic EOH HD Breakaway Kit Battery Box 300-028522 is a replacement breakaway battery box kit used on compatible EZ Loader trailer brake systems. This EZ Loader EOH breakaway battery box helps support the trailer’s emergency breakaway braking system if the trailer separates from the tow vehicle.
Designed for electric over hydraulic brake applications, this component is commonly used with compatible EZ Loader trailers equipped with disc brake systems and EOH brake actuators. The breakaway battery box helps house and support the emergency brake power source required for proper breakaway system operation.
This part is commonly used in the trailer brake safety system, including the breakaway battery box, wiring, breakaway switch circuit, and electric over hydraulic actuator setup. Proper fitment matters because breakaway components must match the trailer brake system, wiring layout, actuator requirements, mounting location, and original EZ Loader configuration.
| Product Details | |
|---|---|
| Part Number: | 300-028522 |
| Fits: | Compatible EZ Loader trailers using an Electric Over Hydraulic EOH HD breakaway battery box setup. Confirm trailer brake system and wiring before ordering. |
| Part Type: | Breakaway Battery Box / Breakaway Kit Component |
| Manufacturer: | EZ Loader |
| Material / Finish: | Battery, plastic box, and wiring components |
| Color: | Gray / black components as supplied |
| Application Type: | Electric over hydraulic trailer brake breakaway system |
| Brake System: | EOH / Electric Over Hydraulic braking |
| Dimensions: | 6-1/4" L x 5" W x 3-3/4" H |
| Package Size: | 7" x 7" x 7" |
| Product Weight: | 5 lb |
| Included: | EOH HD breakaway battery box kit components as supplied |
| Function: | Provides emergency battery support for the trailer breakaway brake circuit |
| Commonly Used With: | EOH actuator, breakaway switch, trailer brake wiring, disc brake systems, and trailer safety chains |
| Why Buyers Like This Part: | OEM EZ Loader part, supports emergency breakaway braking, works with compatible EOH brake systems, and helps replace damaged or worn breakaway battery box components |
| Important Fitment Note: | Confirm part number 300-028522, EOH actuator type, wiring configuration, mounting location, and trailer VIN before ordering. |
Key Features
- Genuine EZ Loader replacement part number 300-028522
- Electric Over Hydraulic EOH HD breakaway battery box kit
- Used with compatible EOH trailer brake systems
- Supports the trailer’s emergency breakaway brake circuit
- Commonly used with compatible EZ Loader trailers equipped with disc brakes and EOH actuators
- Helps replace worn, damaged, or weathered breakaway battery box components
Typical EZ Loader Trailer Applications
This breakaway battery box kit is commonly used on compatible EZ Loader boat trailers equipped with electric over hydraulic brake systems. It may apply to trailers using EOH actuators, disc brakes, and an HD-style breakaway battery box setup.
Always compare the part number, wiring layout, actuator type, mounting location, trailer VIN, and existing breakaway box before ordering.
Installation Considerations
Before replacing a breakaway battery box, inspect the full brake safety circuit. A weak battery, damaged wiring, poor ground, failed switch, or actuator issue can affect breakaway brake performance.
- Confirm the trailer uses an electric over hydraulic brake system.
- Inspect the existing battery box, wiring, grounds, and breakaway switch.
- Check the EOH actuator and trailer plug wiring before installation.
- Mount the box securely where it is protected from road damage and excessive water exposure.
- Test the breakaway system after installation before towing.
Fitment Guidance
This is not a universal trailer battery box. Correct fitment depends on the trailer model, year, VIN, brake actuator type, wiring configuration, mounting location, and existing breakaway system.
- Confirm part number 300-028522 when possible.
- Compare the existing battery box dimensions before ordering.
- Check whether the trailer uses EOH brakes, not a standard electric drum brake setup.
- Verify wiring style and mounting location before installation.
- Send photos if you are unsure about fitment.
Associated / Compatible Parts
These components are commonly inspected or serviced when replacing an EOH breakaway battery box and will be linked as available.
| Part Description | Part Number |
|---|---|
| EOH Brake Actuator | Confirm by trailer application |
| Breakaway Switch | Confirm by trailer application |
| Trailer Brake Wiring | Confirm by trailer application |
| Disc Brake Components | Confirm by trailer application |
Real-World Insight
The breakaway system is a safety-critical part of the trailer brake setup. If the trailer separates from the tow vehicle, the breakaway battery and switch are intended to activate the brakes independently. Because of that, a weak battery, corroded wiring, poor ground, damaged switch, or incorrect replacement part can prevent the system from working when it is needed most.
Questions or Need Help Matching Parts?
We’re based in Hardeeville, South Carolina, and help customers across the country match EZ Loader trailer parts correctly.
Call us before ordering if you are unsure. Photos, measurements, trailer information, and VIN details can help us verify fitment faster.
Need help identifying your trailer style or where a part is located? Our legacy trailer reference site at 411Marine may help you find similar EZ Loader trailer examples. For newer 2026 and later EZ Loader model references, visit EZLoaderTrailers411.
What to Have Ready When You Call
- Trailer year, make, and model
- VIN, if available
- Part number from the original component
- Photos of the existing battery box, wiring, and breakaway switch
- EOH actuator brand or model, if available
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