WM686 100A 12V DC Dustproof Car Starter Relay – Automotive
WM686 100A 12V DC Dustproof Car Starter Relay – Automotive
WM686 100A 12V DC Dustproof Automotive Car Starter Relay
Keep your vehicle's ignition system running smoothly with the WM686 Car Starter Relay. Rated at 100A and 12V DC, this heavy-duty relay is engineered for reliable performance in a wide range of automotive and machinery applications — from passenger vehicles to small cranes and combine harvesters. The dustproof housing and copper terminals ensure long-lasting, stable operation even in demanding environments.
Key Features
- High Current Rating: Handles up to 100A contact load at 12V DC for robust, dependable switching.
- Dustproof Design: Sealed plastic housing protects internal components from dust and debris, extending service life.
- Copper Terminals: Superior electrical conductivity and corrosion resistance for stable, consistent performance.
- Versatile Application: Ideal for car ignition systems, automatic preheating relays, small cranes, wheat combine harvesters, and more.
- Easy Installation: 4-pin terminal connection for straightforward fitting — no special tools required.
- Normally Open Contact Form: Safe default-off operation that only activates when the coil is energized.
- CCC Certified: Meets China Compulsory Certification standards for quality assurance.
Specifications
| Model | WM686 |
| Material | Plastic & Metal |
| Rated Current | 100A |
| Rated Voltage | 12V DC |
| Contact Load | 100A / 12V DC |
| Contact Switching Current | 1A |
| Contact Switching Voltage | 8V DC |
| Contact Form | Normally Open |
| Coil Power Supply | 12V DC |
| Coil Power | 4.8W (intermittent, up to 30 min) / 2.4W (continuous) |
| Number of Pins | 4 |
| Dimensions | 7 cm × 4.5 cm × 4.5 cm (approx. 2.76" × 1.77" × 1.77") |
| Weight | 100 g |
| Country of Origin | Made in China |
What's in the Box
- 1 × WM686 Car Starter Relay
Notes
Due to lighting and screen settings, the actual color may vary slightly from product images. Please allow for minor dimensional differences due to manual measurement.
Learn more: FuelEconomy.gov driving efficiency guidance
Frequently Asked Questions
Q: What vehicles and equipment is the WM686 car starter relay compatible with?
A: The WM686 12V DC starter relay is widely compatible with standard 12V automotive ignition systems as well as small cranes, wheat combine harvesters, automatic ignition switches, and automatic preheating relay systems. Always verify your vehicle's relay specifications before installation.
Q: What is the difference between the 4.8W and 2.4W coil power ratings?
A: The WM686 relay can operate at 4.8W coil power for short-term or intermittent use (up to 30 minutes at a time), while 2.4W is suitable for continuous, long-term operation. Choose the appropriate operating mode based on your application to ensure optimal relay longevity.
Q: Is the WM686 starter relay easy to install?
A: Yes. The relay features a 4-pin terminal connection that makes installation straightforward. Simply match the terminals to your vehicle's wiring harness according to the contact configuration (normally open). No special tools are required for a standard installation.
Q: Does this relay offer any protection against dust or debris?
A: Absolutely. The WM686 features a dustproof plastic housing that shields internal components from dust and particulate matter, making it well-suited for outdoor machinery and engine-bay environments where contamination is a concern.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.