DC 12V 40A Automotive Relay SPDT 4/5 Pin with Harness Socket
DC 12V 40A Automotive Relay SPDT 4/5 Pin with Harness Socket
DC 12V 40A Automotive Relay – SPDT 4/5 Pin with Harness Socket
Keep your vehicle's electrical systems running smoothly with this reliable DC 12V 40A Automotive Relay. Designed for cars, trucks, and other 12V vehicles, this SPDT (Single Pole Double Throw) relay handles high-current switching with ease — making it ideal for car alarm systems, starter circuits, lighting rigs, cooling fans, and more. The included harness socket ensures a clean, secure connection every time.
Key Features
- Rated Voltage: DC 12V — perfect for standard automotive electrical systems
- Rated Current: 40A — handles high-current loads with confidence
- SPDT Configuration: 4/5 Pin design for versatile switching applications
- Harness Socket Included: Pre-wired socket simplifies installation and ensures a solid connection
- Durable Construction: Built from sturdy plastic and metal for long-lasting performance
- Compact Black Design: Low-profile and easy to fit into tight engine bay spaces
- Wide Application: Compatible with car alarms, starters, horns, headlights, cooling fans, and more
Specifications
- Product Name: Car Relay
- Rated Voltage: DC 12V
- Rated Current: 40A
- Pin Number: 4/5 Pin (SPDT)
- Material: Plastic, Metal
- Color: Black
- EU LVD Voltage: Low Voltage – Below 50VAC or 75VDC
- Country of Origin: Made in China
What's in the Box?
- 1 × DC 12V 40A Automotive Relay with Harness Socket
Perfect For
- Car alarm & security system wiring
- Starter circuit upgrades
- Auxiliary lighting (headlights, fog lights, LED bars)
- Cooling fans & electric horns
- DIY automotive electrical projects
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Frequently Asked Questions
Q: What does SPDT mean on this automotive relay?
A: SPDT stands for Single Pole Double Throw. This means the relay has one common terminal that can switch between two circuits — a normally open (NO) and a normally closed (NC) contact — making it highly versatile for automotive switching applications like car alarms, starters, and lights.
Q: Does this relay come with a harness socket?
A: Yes! The package includes 1 × DC 12V 40A Automotive Relay along with a harness socket, allowing for easy plug-and-play installation without the need for soldering directly to the relay terminals.
Q: Is this relay compatible with standard 12V vehicle electrical systems?
A: Absolutely. This relay is rated at DC 12V and 40A, making it fully compatible with the standard 12V electrical systems found in most cars, trucks, motorcycles, and other automotive applications.
Q: Can I use a 4-pin or 5-pin configuration with this relay?
A: Yes, this relay supports both 4-pin and 5-pin wiring configurations. The 4-pin setup uses the normally open contacts, while the 5-pin setup gives you access to both normally open and normally closed contacts for more advanced switching needs.
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.