Battery Switch Relay BR261 24V 100A
A 24V 100A battery switch relay that cross references BR261, 8279-0052, 8279-0055, 8279-0065, BS-H and BS-Q, fitted to ISUZU and KOMATSU commercial vehicles, including trucks, excavators, engineering machinery and buses. It controls the main battery circuit by switching high current on and off from the ignition key or remote start system. Supplied in neutral, customised or CHINO branded packaging with a 12 month warranty from B/L date.
MOQ 10 pcs · Free samples, freight at your cost · Neutral or own brand packing · 12 month warranty from B/L date
Key Benefits
- Cross references six OEM part numbers so one replacement covers multiple vehicle builds
- 100A rated contact capacity handles high current battery circuits in heavy-duty vehicles
- 24V system voltage matches ISUZU and KOMATSU commercial vehicle electrical systems
- Direct plug-in fit with original connector pattern, no rewiring required at the workshop
- Ships in 7 to 10 working days as a stocked fast-moving item
- Twelve month warranty from B/L date protects against early failure in high-use applications
Application Scenarios
Where It Is Used
- Fleet workshops replacing failed battery relays on ISUZU trucks after repeated cold cranking cycles
- Aftermarket distributors stocking ISUZU and KOMATSU electrical components for construction and mining fleets
- Excavator and engineering machinery repair shops restoring power to machines with no start issues
- Repair chains diagnosing vehicles that won’t crank due to a failed battery switch relay
Who It Is For
- Truck parts importers who buy against ISUZU and KOMATSU OEM numbers
- Aftermarket distributors serving construction and mining vehicle fleets
- Fleet maintenance managers running ISUZU and KOMATSU trucks and excavators
- Auto electrical repair shops that stock high-current relays by application
Problems It Solves
Symptoms on the Vehicle
- Vehicles that fail to start due to a burnt-out or welded battery switch relay
- Relays that fail to disconnect after engine start, causing battery drain overnight
- Original relays that are slow to source and expensive through the dealer network
- Mixed fleets that would otherwise need multiple relay part numbers for ISUZU and KOMATSU vehicles
Technical Features
- 100A high-current switching capability for main battery circuit control
- 24V commercial vehicle system voltage with sealed relay housing
- Ten-pin flat blade connector matching the original OEM loom
- Electromagnetic coil actuation with built-in flyback diode protection
- Designed for repeated switching in high-vibration environments
- Suitable for mounting on engine control panels or in cab relay boxes
Specifications
Only values printed on the original product page are listed. Anything not shown here we confirm in writing before you order.
| OEM No | BR261, 8279-0052, 8279-0055, 8279-0065, BS-H, BS-Q |
|---|---|
| Reference No | 8279-0052, 8279-0055, 8279-0065, BS-H, BS-Q |
| Type | Battery switch relay |
| Voltage | 24V |
| Current Rating | 100A |
| Application | ISUZU, KOMATSU, Truck, Excavator, Engineering Vehicle, Bus |
| Place of Origin | Ruian, China |
| MOQ | 10 pcs |
| Delivery Time | 7-10 working days |
| Packing | Neutral, customised or CHINO box |
| Warranty | 12 months since B/L date |
| Certification | ISO 9001:2015 |
Materials and Manufacturing
Materials
- Moulded thermoplastic relay housing
- Copper alloy flat blade terminals
- Electromagnetic coil with laminated iron core
- Silver alloy contact points for high current switching
- Flyback diode for coil protection
Quality Control
- 100 percent function test before delivery
- Performance parameters checked in the in-house laboratory
- Component materials sourced from named suppliers under the IATF 16949:2016 documented process
- Production and test steps recorded on video
Manufacturing Process
Terminal stamping and plating
Coil winding and assembly
PCB and contact assembly
Housing moulding and terminal insertion
Final assembly and potting
Electrical function test
Customization Options
- Neutral packing with no brand marking
- Customer branded box and barcode label
- CHINO branded retail box
- OEM and ODM builds against a sample or drawing
Compared With the Alternatives
| ISUZU dealer original relay | Same fitment and current rating at aftermarket pricing, but without the dealer part number on the box unless you order branded packaging |
|---|---|
| Used or reclaimed relays | New units carry a 12 month warranty from B/L date; reclaimed stock carries none and may have degraded contacts |
Use Guide
- Confirm the vehicle is a 24V system before fitting
- Isolate the battery, unplug the failed relay from the control panel and fit the replacement in the same orientation
- Test the relay by turning the ignition key or remote start system to ensure the battery circuit engages and disengages correctly
- If the relay clicks but the battery does not connect, check the battery terminal and earth connection before condemning the relay
Also Listed Under
Questions About This Part
Which ISUZU and KOMATSU models does BR261 fit?
It is listed for ISUZU and KOMATSU trucks, excavators, engineering machinery and buses. Send us your chassis number and we will confirm against the original relay before you order.
What is the minimum order quantity?
10 pcs on catalogue items. We also accept small trial orders so you can test the part in your own market first.
How long is delivery?
7 to 10 working days for fast moving items held in stock. Production orders take longer and we confirm the date in writing when the order is placed.
Can I get the parts in my own packaging?
Yes. We supply neutral packing, your own branded box with barcode label, or the CHINO box. Artwork is confirmed before printing.
What warranty do you give?
12 months from the B/L date. If a unit fails within that period we take responsibility when the fault is caused by the part, and we reply to any complaint within 24 hours with a solution within 3 days.
Are samples free?
The sample itself is free of charge. We discuss the freight cost with you before shipping.
How do you control quality?
Every part is function tested before delivery and performance parameters are checked in our own laboratory. Components come from named suppliers and production follows the IATF 16949:2016 documented process.
Related Products
Ask for a Quote on Battery Switch Relay BR261 24V 100A
Send the number printed on your original unit and a photograph of the connector. We confirm the match before you order and send a free sample first.