---
product_id: 36985521
title: "Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2"
brand: "ehdis"
price: "฿1020"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/36985521-car-relay-4-pin-12v-40amp-spst-model-no-jd2912
store_origin: TH
region: Thailand
---

# 40A high current capacity 4-pin SPST heavy-duty relay Operates up to 80°C reliably Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2

**Brand:** ehdis
**Price:** ฿1020
**Availability:** ✅ In Stock

## Summary

> ⚡ Drive your ride’s power game to the next level!

## Quick Answers

- **What is this?** Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2 by ehdis
- **How much does it cost?** ฿1020 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/36985521-car-relay-4-pin-12v-40amp-spst-model-no-jd2912)

## Best For

- ehdis enthusiasts

## Why This Product

- Trusted ehdis brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Silver tin oxide contacts ensure durability and consistent performance.
- • **Dual Pack Advantage:** Two relays included—double your upgrade potential or keep a spare for peace of mind.
- • **Plug & Play Simplicity:** No tools required—just connect wires and get your system running instantly.
- • **Power Through Anything:** Handles up to 40 amps for your toughest automotive electrical needs.
- • **Heat-Resistant Reliability:** Operates smoothly even at temperatures up to 80°C, perfect for demanding environments.

## Overview

The EHDIS Car Relay 4 Pin 12V 40A SPST is a heavy-duty automotive relay designed for high current applications. Featuring silver tin oxide contacts and a robust 4-pin design, it supports up to 40 amps and operates reliably in temperatures up to 80°C. Easy to install with no extra tools needed, this pack of two relays ensures your vehicle’s electrical components perform flawlessly under demanding conditions.

## Description

EHDIS Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2

## Features

- Heavy duty 4-prongs SPST relays, jd1912 12v 40a relay
- Use optional Relay Harness, or female Crimp Connectors
- High 40A coil capacity- able to handle those high current applications with ease
- Package Include: 2 x 40A 4-Pin 12V Vehicle Relays
- The Automotive relay is suitable for normal automobile use and simple to operate, you just need to connect the relay with the wire, no other tools needed, convenient for your use and replace, allowing your components to work properly

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Connector Type | Crimp |
| Contact Material | Silver Tin Oxide |
| Contact Type | Normally Open |
| Current Rating | 40 Amps |
| Brand | EHDIS |
| Operation Mode | Automatic |
| Wattage | 1.8 watts |
| Coil Voltage | 12 Volts |
| Contact Current Rating | 40 Amps |
| Maximum Switching Current | 40 Amps |
| Maximum Switching Voltage | 12 Volts |
| Minimum Switching Voltage | 12 Volts (DC) |
| Specification Met | Ccee |
| Upper Temperature Rating | 80 Degrees Celsius |
| UPC | 713653050390 |
| Manufacturer | Ehdis |
| Item Weight | 1.41 ounces |
| Product Dimensions | 1.06 x 1.06 x 0.98 inches |
| Item model number | 2C05-12V |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 2C05-12V |

## Product Details

- **Connector Type:** Crimp
- **Contact Material:** Silver Tin Oxide
- **Contact Type:** Normally Open
- **Current Rating:** 40 Amps
- **Brand:** EHDIS

## Images

![Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2 - Image 1](https://m.media-amazon.com/images/I/61gZPrPUM2L.jpg)

## Questions & Answers

**Q: Can this relay be no and nc ? or just no ?**
A: These are just standard relays. The circuit you are controlling is NO (no power) until a control signal is received.

**Q: Can this be used to replace the relay on aftermarket HID kits?**
A: i was wondering that too, and I did some checking and think they will,,, the relay on the HID kit is 12 v 40 amp, 4 pin, and they look the same, and looks like the specs are the same

**Q: Sirve para Ford econoline 3500 2014?**
A: Hi, this relay is universal for all kinds of vehicle. Please kindly know and choose your needed specification of this item.
Thank you.

**Q: What are the dimensions of the relay box, not including the mount or connections?**
A: Hi, please know the dimensions of the relay box is 1.1 x 1.2 x1 inch.
Thank you.

## Frequently Bought Together

- EHDIS Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2
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- EPLZON JD1912 Relay 4 Pin 40A 12V SPST Car Truck Van Motorcycle Boat Relay (Pack of 2 pcs)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-28*