Battery Switch Relay BR253 24V 100A
A 24V 100A battery switch relay that cross references BR253, BR257, BR153 and BR155, fitted to ISUZU and KOMATSU commercial vehicles, including trucks, excavators, engineering machinery and buses. It controls the main battery circuit to the starter motor and cab electrical system. Factory reference 8-253-38. 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 four OEM part numbers so one line item covers multiple vehicle builds
- 100A rated contact capacity handles high current draw from starter motors and cab systems
- 24V operation matches the electrical system of ISUZU and KOMATSU heavy equipment
- Direct plug-in replacement for the original relay with no rewiring required
- Ships in 7 to 10 working days as a stocked fast moving item
- Twelve month warranty from B/L date protects distributor shelf stock
Application Scenarios
Where It Is Used
- Fleet workshops replacing failed battery relays on ISUZU trucks after repeated starting issues
- Aftermarket distributors stocking ISUZU and KOMATSU electrical components for mixed equipment fleets
- Engineering machinery repair shops restoring battery circuit function on excavators and loaders
- Repair chains diagnosing vehicles that fail to start due to a stuck or open battery switch relay
Who It Is For
- Truck parts importers who buy against ISUZU and KOMATSU OEM numbers
- Aftermarket distributors serving heavy equipment and construction vehicle markets
- Fleet maintenance managers running ISUZU and KOMATSU trucks and excavators
- Auto electrical repair shops that stock relays by voltage and current rating
Problems It Solves
Symptoms on the Vehicle
- Vehicles that fail to start due to a failed battery switch relay with open contacts
- Relays that overheat and weld contacts shut, causing the battery to drain overnight
- Original relays that are slow to source and expensive through the dealer network
- Mixed fleets of ISUZU and KOMATSU equipment that would otherwise need four separate relay part numbers
Technical Features
- 24V DC battery switch relay with 100A switching capacity
- Single pole, normally open contact configuration for main battery circuit control
- Housing and terminals designed to match the original ISUZU and KOMATSU fitment
- Built-in thermal protection to prevent overheating under high load
- Sealed relay body suitable for underhood or cab-mounted relay panels
- Direct replacement for BR253, BR257, BR153 and BR155 in 24V and 12V systems
Specifications
Only values printed on the original product page are listed. Anything not shown here we confirm in writing before you order.
| OEM No | BR253, BR257, BR153, BR155 |
|---|---|
| Reference No | 8-253-38 |
| Factory No | 8-253-38 |
| 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 contact blades and terminals
- Laminated steel armature and coil frame
- Insulated coil winding with epoxy encapsulation
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 insulation
Armature and contact assembly
Housing moulding and final relay assembly
Electrical function test and leakage 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 or KOMATSU dealer original relay | Same fitment and electrical 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
- Match the relay housing and terminal pattern against the old unit before ordering
- Isolate the battery, unplug the failed relay from the relay panel and fit the replacement in the same orientation
- Test the relay by turning the ignition key to start; the relay should click and hold during cranking
- If the starter does not engage, check the battery, ignition switch and ground connection before condemning the relay
Also Listed Under
Questions About This Part
Which ISUZU and KOMATSU models does BR253 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.
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Ask for a Quote on Battery Switch Relay BR253 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.