12V/24V 100A 5-Pin Waterproof Car Relay Module | Aluminum
12V/24V 100A 5-Pin Waterproof Car Relay Module | Aluminum
12V/24V 100A High Current 5-Pin Waterproof Car Relay Module
Upgrade your vehicle's electrical system with this robust 100A High Current Car Relay. Built with a durable aluminum shell for excellent heat dissipation and weatherproofing, this 5-pin relay module is engineered to handle heavy-duty switching loads in automotive, marine, and off-road applications. Whether you're wiring up high-draw accessories like winches, light bars, compressors, or starter circuits, this relay delivers dependable performance.
Key Features
- Dual Voltage Compatibility: Works with both 12V and 24V electrical systems — ideal for cars, trucks, SUVs, boats, and heavy equipment.
- High 100A Current Rating: Safely switches high-current circuits, protecting your vehicle's OEM wiring from overload.
- 5-Pin Configuration: Supports both normally open (NO) and normally closed (NC) switching for flexible wiring setups.
- Waterproof Aluminum Shell: Sealed metal housing resists moisture, dust, and vibration — built to endure harsh under-hood conditions.
- Compact & Easy to Mount: Slim module design fits easily in tight engine bays or electrical panels.
- Wide Application: Suitable for automotive, marine, RV, agricultural, and industrial 12V/24V DC systems.
Specifications
| Material | Metal (Aluminum Shell) |
| Operating Voltage | 12V / 24V DC |
| Maximum Current | 100A |
| Pin Configuration | 5-Pin |
| Housing | Waterproof Aluminum |
| Country of Origin | Made in Mainland China |
What's in the Box?
- 1x 100A 12V/24V 5-Pin Waterproof Car Relay Module
Important Notes
- Due to lighting and monitor differences, the actual color may vary slightly from product images.
- Please allow 1mm–1cm tolerance due to manual measurement.
Learn More About Automotive Electrical Safety
For guidance on safe automotive electrical wiring and relay usage, visit the U.S. Consumer Product Safety Commission (CPSC) for consumer safety information, and OSHA's Electrical Safety Resources for best practices when working with vehicle electrical systems.
Frequently Asked Questions
Q: Is this 100A car relay compatible with both 12V and 24V systems?
A: Yes! This relay module is designed to work with both 12V and 24V DC electrical systems, making it suitable for passenger cars, trucks, SUVs, boats, RVs, and heavy machinery.
Q: What is a 5-pin relay and how does it differ from a 4-pin relay?
A: A 5-pin relay includes an extra terminal that allows it to support both normally open (NO) and normally closed (NC) switching configurations, giving you more wiring flexibility compared to a standard 4-pin relay which only supports normally open circuits.
Q: Is the aluminum shell truly waterproof for outdoor or under-hood use?
A: The sealed aluminum housing is designed to resist moisture and dust, making it well-suited for under-hood automotive environments, marine applications, and other outdoor installations where exposure to the elements is a concern.
Q: What types of accessories can I control with this 100A relay?
A: This high-current relay is ideal for controlling high-draw accessories such as winches, LED light bars, air compressors, electric fans, starter circuits, and other 12V/24V devices that require reliable, heavy-duty switching.