24V 30A Car Relay 4/5 Pin SPST Pre-Wired Socket with Fuse

24V 30A Waterproof Car Relay with Pre-Wired Socket & Fuse

Upgrade your vehicle's electrical system with this durable 24V 30A SPST Car Relay. Compatible with both 4-pin and 5-pin configurations, it comes fully pre-wired with a socket base and inline fuse — making installation fast, clean, and reliable. Built from robust plastic and metal materials, this relay is designed to withstand the demands of automotive, truck, and heavy-duty vehicle environments.

Key Features

• Voltage & Amperage: Rated 24V DC / 30A — suitable for trucks, commercial vehicles, and 24V electrical systems
• 4/5 Pin Compatibility: Works as both a 4-pin and 5-pin SPST relay for flexible wiring configurations
• Pre-Wired Socket Base: Comes with ready-to-connect wires and integrated fuse for a hassle-free setup
• Waterproof Construction: Sealed design protects against moisture, dust, and road debris
• Durable Materials: Heavy-duty plastic housing with metal contacts for long-lasting conductivity
• Color: Black — blends seamlessly into engine bay and interior wiring setups
• Package Includes: 1× Pre-wired relay socket with fuse

Ideal Applications

• Trucks, buses, and commercial 24V vehicles
• Auxiliary lighting, horns, and accessory circuit control
• DIY automotive wiring upgrades and repairs
• Heavy-duty off-road and powersports electrical systems

Important Notes

• Please allow ±5–10mm variance due to manual measurement.
• Actual color may vary slightly depending on monitor settings.
• Refer to the product images and description for dimensional reference — photos may not reflect true-to-scale size.

Made in Mainland China.

For more information on automotive electrical safety standards, visit the U.S. Consumer Product Safety Commission (CPSC).

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Frequently Asked Questions

Q: Is this car relay compatible with 12V vehicles as well?

A: This relay is specifically rated for 24V DC systems, making it ideal for trucks, buses, and commercial vehicles. It is not recommended for standard 12V passenger car systems — please verify your vehicle's voltage before purchasing.

Q: Does the relay come with all the wiring needed for installation?

A: Yes! The relay comes pre-wired with a socket base and an inline fuse, so you have everything required for a straightforward installation without needing to source additional connectors or wiring harnesses.

Q: What does SPST mean and how does it affect my wiring setup?

A: SPST stands for Single Pole Single Throw — it is a simple on/off relay switch that connects or disconnects a single circuit. This makes it perfect for controlling accessories like lights, horns, fans, and pumps in your vehicle's 24V electrical system.

Q: Is this relay truly waterproof?

A: Yes, the relay features a waterproof sealed design that helps protect the internal components from moisture, dust, and environmental exposure — making it well-suited for under-hood and exposed mounting locations.