12V 5-Pin 30A/40A Weatherproof Car Relay – Waterproof Auto

12V Weatherproof Car Relay – 5 Pin, 30A/40A

Keep your vehicle's electrical system running smoothly with this heavy-duty 12V 5-Pin Car Relay. Rated for both 30A and 40A loads, this weatherproof and waterproof relay is engineered to deliver stable, reliable switching performance in virtually any automotive environment — rain, dust, or road grime included.

Whether you're replacing a worn-out relay or upgrading your electrical setup, this unit is a direct, plug-and-play solution for a wide range of 12V automotive circuits including lights, horns, fuel pumps, fans, and more.

Key Features

• Dual Current Rating: Compatible with both 30A and 40A circuits for versatile use across multiple vehicle applications
• Weatherproof & Waterproof Housing: Sealed construction resists moisture, splashes, and environmental exposure for long-lasting performance
• 5-Pin Design: Standard industry layout for easy, universal fitment across most 12V automotive and off-road vehicles
• Durable Construction: Built from metal and hard-wearing plastic for a robust, reliable build that stands up to daily use
• High Reliability: Stable electrical characteristics ensure consistent switching performance every time
• Easy Replacement: A direct swap for old or faulty relays — no modifications required

Specifications

• Voltage: 12V DC
• Current Rating: 30A / 40A
• Pins: 5-Pin
• Material: Metal + Plastic
• Weather Resistance: Weatherproof & Waterproof
• Application: Automotive / 12V Vehicles

What's in the Box?

• 1 × 12V 5-Pin 30A/40A Weatherproof Car Relay

For general guidance on automotive electrical safety and standards, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: What vehicles is this 12V 5-pin relay compatible with?

A: This 12V 5-pin relay is designed for universal compatibility with most 12V automotive, truck, SUV, motorcycle, and off-road vehicles. It fits standard 5-pin relay sockets, making it a straightforward replacement for factory or aftermarket relays in lighting, horn, fan, fuel pump, and other circuits.

Q: What is the difference between the 30A and 40A ratings on this relay?

A: This relay supports two operating modes: 30A is typically used for the normally-open (NO) contact circuit, while 40A refers to the maximum switching capacity. Always match the relay rating to your circuit's requirements for safe and reliable operation.

Q: Is this relay truly waterproof — can it be mounted in exposed engine bay locations?

A: Yes. The sealed, weatherproof housing is designed to resist moisture, splashes, and environmental exposure, making it suitable for mounting in engine bays and other areas subject to water and debris. For best results, ensure the wiring connections are also properly protected.

Q: What is this relay made of?

A: The relay is constructed from a combination of metal and durable plastic, providing a solid, corrosion-resistant build suited for demanding automotive environments.