DC 12V 40A SPDT Car Relay – 4/5 Pin 1NO 1NC Automotive Relay
DC 12V 40A SPDT Car Relay – 4/5 Pin 1NO 1NC Automotive Relay
DC 12V 40A SPDT Car Relay – 4/5 Pin Automotive Switching Relay
Upgrade your vehicle's electrical system with this reliable DC 12V 40A SPDT Car Relay. Designed for automotive applications, this compact relay handles heavy-duty switching tasks with ease — whether you're wiring a car alarm, horn, lighting circuit, or any 12V accessory. The dual 4/5 pin configuration (1NO / 1NC) gives you flexible installation options for a wide range of automotive projects.
Key Features
- Rated Voltage: DC 12V — perfectly suited for standard automotive electrical systems
- Rated Current: 40A — handles high-current loads with confidence
- Switch Type: SPDT (Single Pole Double Throw) with 1 Normally Open (NO) and 1 Normally Closed (NC) contact
- Pin Configuration: Compatible with 4-pin and 5-pin setups for versatile wiring flexibility
- Durable Construction: Built with a sturdy plastic and metal housing in a clean black finish
- Broad Applications: Ideal for car alarms, horns, lights, fans, fuel pumps, and other 12V electrical accessories
- Compact & Easy to Install: Standard automotive relay form factor fits most relay sockets and harnesses
Specifications
| Brand | JINHF |
| Rated Voltage | DC 12V |
| Rated Current | 40A |
| Switch Type | SPDT (1NO / 1NC) |
| Pin Number | 4/5 Pin |
| Material | Plastic, Metal |
| Main Color | Black |
| Country of Origin | Made in China |
What's in the Box
- 1 × DC 12V 40A SPDT Car Relay (4/5 Pin)
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Frequently Asked Questions
Q: What is an SPDT relay and how does it work in an automotive circuit?
A: An SPDT (Single Pole Double Throw) relay acts as an electrically controlled switch. It has one common terminal, one Normally Open (NO) contact, and one Normally Closed (NC) contact. When the relay coil is energized (e.g., by a 12V signal), the common terminal switches from the NC to the NO contact, allowing or interrupting current flow to your accessory or device. This makes it ideal for car alarms, lighting controls, and other switching applications.
Q: Is this relay compatible with standard automotive relay sockets?
A: Yes. This relay uses the standard automotive relay pin layout, making it compatible with most off-the-shelf relay sockets and wiring harnesses available for 12V vehicle systems. The 4/5 pin configuration ensures broad compatibility across a wide range of applications.
Q: What types of automotive accessories can this relay control?
A: This 40A rated relay is suitable for a variety of 12V automotive loads, including car alarms, horns, headlights, auxiliary lighting, cooling fans, fuel pumps, and other electrical accessories that require reliable high-current switching in a 12V DC system.
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.