Battery Switch Relay DR266 24V 100A
A 24V 100A battery switch relay that cross references OEM DR266, fitted to ISUZU, KOMATSU and other 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 switch. 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 DR266 to replace the original battery switch relay without chassis modifications
- 100A rated current capacity handles high-load starting and accessory circuits in commercial vehicles
- 24V system voltage matches ISUZU and KOMATSU heavy-duty electrical systems
- Direct plug-in fit with original connector housing and terminal layout
- 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 demanding environments
Application Scenarios
Where It Is Used
- Fleet workshops replacing failed battery relays on ISUZU trucks after repeated starting issues
- Aftermarket distributors stocking battery switch relays for KOMATSU excavators and engineering vehicles
- Repair chains diagnosing no-start conditions caused by a failed battery relay
- Body builders installing new electrical systems on rebuilt or imported ISUZU and KOMATSU chassis
Who It Is For
- Truck parts importers sourcing against ISUZU and KOMATSU OEM numbers
- Aftermarket distributors serving heavy-duty vehicle fleets in mining and construction
- Fleet maintenance managers running ISUZU and KOMATSU trucks and excavators
- Auto electrical repair shops that stock high-current relays by OEM number
Problems It Solves
Symptoms on the Vehicle
- Trucks that fail to start due to a failed battery switch relay that cannot carry full current
- Relays that overheat or weld contacts under high load, causing permanent open circuit
- Original DR266 relays that are slow to source and expensive through dealer channels
- Mixed fleets requiring one relay part number to cover ISUZU, KOMATSU and other commercial vehicles
Technical Features
- 100A high-current switching for main battery circuit control
- 24V commercial vehicle system voltage compatible with ISUZU and KOMATSU systems
- Single pole, normally open contact configuration for ignition-controlled battery isolation
- Sealed relay housing suitable for engine bay and under-hood mounting
- Plug-and-play connector housing matches original OEM loom without rewiring
- Built-in contact protection to reduce arcing during high-current switching
Specifications
Only values printed on the original product page are listed. Anything not shown here we confirm in writing before you order.
| OEM No | DR266 |
|---|---|
| Reference No | DK238D |
| 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
- Electromagnetic coil with insulated wire
- Spring-loaded contact mechanism with silver alloy contacts
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
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 |
|---|---|
| Universal 24V high-current relay | The 100A relay has the original connector housing and pin layout; a universal relay requires rewiring and risks incorrect terminal assignment |
| 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 connector housing and terminal layout against the old relay before ordering
- Isolate the battery, unplug the failed relay from the control panel, and install the replacement in the same orientation
- Test the relay by turning the ignition switch on and verify the battery circuit closes without arcing or overheating
- If the relay clicks but the battery does not connect, check the battery terminal and main fuse before condemning the relay
Also Listed Under
Questions About This Part
Which vehicles does DR266 fit?
It is listed for ISUZU, KOMATSU, trucks, excavators, engineering vehicles 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 DR266 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.