4 PIN Automotive Relay 12v 30A Normally Open + 30A Fuse

📝 4 Pin Automotive Relay 12v 30A Normally Open + 30A Fuse

This 4 pin 12v automotive relay is designed to handle high-current switching safely and reliably in vehicle electrical systems. Supplied with a built-in fuse socket and 30A blade fuse, it provides a compact, all-in-one solution for controlling accessories while protecting circuits from overload.

Ideal for automotive, caravan, and off-road applications, this relay is commonly used for lighting circuits, fans, horns, wipers, pumps, speakers, and other 12v accessories where dependable switching is required.

⭐ Essential Benefits

• 30A high-current capability – suitable for demanding automotive accessories.
• Normally open (NO) operation – circuit closes only when the relay is energised.
• Integrated fuse socket – includes a 30A blade fuse, eliminating the need for a separate holder.
• Pre-wired relay harness – colour-coded wires for fast, clear installation.
• Compact space-saving design – combines relay and fuse protection in one unit.
• Interlocking socket design – allows multiple relays to be clipped together neatly.
• Metal mounting bracket – enables secure and straightforward mounting.

⚙️ Functionality

This SPST (single pole, single throw) normally open relay activates when 12v power is applied to the coil, allowing high-current loads to be switched using a low-current trigger circuit.

The integrated fuse socket protects the load circuit, while the colour-labelled wiring harness simplifies correct connections for power, ground, trigger, and output. The interlocking socket edges allow multiple relays to be grouped together for clean, professional wiring layouts.

🔌 Applications

• Driving lights and light bars
• Fog lamps and work lights
• Cooling fans and pumps
• Wipers and starter circuits
• Speakers and audio accessories
• Traction control and auxiliary systems

🧰 Installation Difficulty

🟢 2/5 (Easy)
Straightforward wiring using the supplied harness and standard automotive connections.

🔍 Features

• 4 pin automotive relay
• Normally open (NO) contact configuration
• Built-in fuse holder with 30A blade fuse
• Colour-coded relay harness
• Interlocking relay socket design
• Metal mounting bracket

📊 Specifications

📦 What’s Included

• 1 × 4 pin 12v 30A automotive relay
• 1 × relay wiring harness
• 1 × 30A blade fuse

🙌 Why Choose This Product?

This relay offers a reliable, space-efficient way to control high-current accessories while protecting your wiring. With an integrated fuse, colour-coded harness, and modular socket design, it’s ideal for both DIY builds and professional automotive installs.

🚀 Our Promise

Order today for same-day dispatch and explore our full range of automotive electrical components and accessories.