Battery Switch Relay DK238 Truck 24V 100A
A 24V 100A battery switch relay that cross references DK238 24V and DK138 12V, fitted to FAW trucks, excavators, engineering vehicles and buses. It controls the main battery circuit by connecting or disconnecting the battery from the vehicle’s electrical system when the ignition switch is turned off. 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 DK238 24V and DK138 12V, allowing one part to serve both 24V and 12V vehicle systems
- 100A rated current capacity supports high-load commercial vehicle battery circuits
- Direct plug-in replacement for the original relay with no wiring modifications required
- Built-in protection against voltage spikes and reverse polarity in harsh operating environments
- Ships in 7 to 10 working days as a stocked fast moving item
- Twelve month warranty from B/L date covers failure due to manufacturing defects
Application Scenarios
Where It Is Used
- Fleet workshops replacing failed battery relays on FAW trucks after prolonged use in high-vibration environments
- Aftermarket distributors stocking a single relay for multiple FAW vehicle types including trucks, buses and engineering machinery
- Repair chains restoring battery power to excavators and construction vehicles with dead or stuck relays
- Body builders integrating new electrical systems on FAW-based chassis where the original relay is unavailable
Who It Is For
- Truck parts importers sourcing against FAW OEM numbers
- Aftermarket distributors serving Chinese commercial vehicle fleets
- Fleet maintenance managers running FAW trucks, buses and engineering vehicles
- Repair shops that stock relays by voltage and current rating
Problems It Solves
Symptoms on the Vehicle
- Battery drain caused by a relay that fails in the closed position and keeps the system powered
- Vehicle failure to start due to a relay that fails in the open position and cuts off battery power
- Relays that overheat or burn out under high load due to inadequate current rating
- Lack of a single part that fits both 12V and 24V FAW vehicles, requiring two separate SKUs
Technical Features
- 100A high-current switching capability for heavy-duty battery circuits
- 24V nominal operating voltage with compatibility for 12V systems via cross-reference
- Single pole, normally open contact configuration for main battery isolation
- Sealed relay housing suitable for under-hood or engine bay mounting
- Mechanical and electrical interlock to prevent accidental activation during maintenance
- Designed for use in trucks, excavators, engineering vehicles and buses
Specifications
Only values printed on the original product page are listed. Anything not shown here we confirm in writing before you order.
| OEM No | DK238 24V, DK138 12V |
|---|---|
| Reference No | DK238, DK138 |
| Type | Battery switch relay |
| Voltage | 24V |
| Current Rating | 100A |
| Application | FAW, 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
- Sintered metal contact surface for high current durability
- Electromagnetic coil with insulated wire
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
Contact blade stamping and plating
Coil winding and insulation
Housing moulding and assembly
Final relay 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
| FAW dealer original relay | Same fitment and current rating at aftermarket pricing, but without the dealer part number on the box unless branded packaging is ordered |
|---|---|
| Used or reclaimed relay | New units carry a 12 month warranty from B/L date; reclaimed stock carries no warranty and may have degraded contacts |
Use Guide
- Confirm the vehicle system voltage is 24V before fitting, or verify compatibility with DK138 12V for 12V systems
- Match the physical housing and terminal layout against the original relay before ordering
- Isolate the battery, disconnect the old relay from the main electrical panel, and install the replacement in the same orientation
- Test the relay by turning the ignition switch on and off to confirm proper battery connection and disconnection
- If the battery remains connected after ignition off, check the ignition switch and control wiring before replacing the relay
Also Listed Under
Questions About This Part
Which vehicles use DK238 24V and DK138 12V?
It is listed for FAW trucks, excavators, engineering vehicles and buses. Send your chassis number and we will confirm fitment 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 DK238 Truck 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.