4/5 Pin 12V 24V 40A Waterproof Automotive Relay with Socket

JINHF 4/5 Pin Waterproof Automotive Relay – 12V/24V 40A with Socket

Upgrade your vehicle's electrical control system with this heavy-duty waterproof automotive relay from JINHF. Designed for 12V and 24V DC systems, this compact yet powerful relay handles up to 40A of switched current, making it ideal for motorcycle headlights, air conditioning units, horns, fans, and other automotive accessories. Available as a relay only, socket only, or a convenient relay + socket combo set.

Made in Mainland China.

Key Features

• Dual Voltage Compatibility: Works with both 12V DC and 24V DC coil voltage for wide automotive and motorcycle applications.
• High Current Capacity: Rated at 40A/30A at 14VDC — handles demanding electrical loads with ease.
• Waterproof Construction: Built to withstand moisture and harsh environmental conditions under the hood or on a motorcycle.
• Extreme Temperature Range: Operates reliably from -40°C to +125°C — from freezing winters to scorching engine bays.
• 4-Pin & 5-Pin Options: Choose the configuration that matches your wiring harness and application.
• Long Service Life: Up to 1,000,000 electrical cycles and 10,000,000 mechanical cycles for lasting dependability.
• Low Coil Power: Only 1.80W coil power draw, minimizing battery drain.
• Socket Compatible: Quick-connect and socket-type installation for fast, secure fitment.

Technical Specifications

Package Contents

Choose your preferred option at checkout:

• 1× Relay only
• OR 1× Socket only
• OR 1× Relay + 1× Socket combo

Common Applications

• Motorcycle headlights & auxiliary lighting
• Automotive air conditioning systems
• Car horns, fans, and cooling systems
• 12V/24V truck and fleet vehicle accessories
• Custom wiring harnesses and control circuits

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Note: Screen color calibration may cause slight color variation from product images. Please allow minor measurement tolerances of ±1–2mm.

Learn more: FuelEconomy.gov driving efficiency guidance

Frequently Asked Questions

Q: Is this automotive relay compatible with both 12V and 24V vehicle systems?

A: Yes, this relay supports both 12V DC and 24V DC coil voltages, making it suitable for passenger cars, motorcycles, trucks, and other 12V or 24V electrical systems.

Q: What is the difference between the 4-pin and 5-pin configurations?

A: A 4-pin relay has terminals for coil power, switched load (NO contact), and common — ideal for simple on/off switching. A 5-pin relay adds a Normally Closed (NC) terminal, allowing it to switch between two circuits. Choose based on your wiring diagram and application needs.

Q: Can I use this relay outdoors or on a motorcycle exposed to rain?

A: Absolutely. This relay features a waterproof design rated for extreme temperatures (-40°C to +125°C), making it well-suited for outdoor motorcycle installations, under-hood automotive use, and other environments exposed to moisture and temperature swings.

Q: Does the set include both a relay and a socket?

A: You can choose from three package options: relay only, socket only, or a combo pack containing both 1× relay and 1× socket. Select your preferred configuration when adding to cart.

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.