---
product_id: 48347663
title: "Ehdis 2 pcs Car Relay 12v 40 APM 4 Pin Relay Kit Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters"
brand: "ehdis"
price: "€ 27.09"
currency: EUR
in_stock: true
reviews_count: 13
category: "Ehdis"
url: https://www.desertcart.nl/products/48347663-ehdis-2-pcs-car-relay-12v-40-apm-4-pin
store_origin: NL
region: Netherlands
---

# 40A max switching current 10,000+ mechanical cycles -30°C to +80°C operating range Ehdis 2 pcs Car Relay 12v 40 APM 4 Pin Relay Kit Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters

**Brand:** ehdis
**Price:** € 27.09
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your ride with reliability that lasts!

## Quick Answers

- **What is this?** Ehdis 2 pcs Car Relay 12v 40 APM 4 Pin Relay Kit Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters by ehdis
- **How much does it cost?** € 27.09 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/48347663-ehdis-2-pcs-car-relay-12v-40-apm-4-pin)

## 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:** Endures over 10,000 mechanical cycles for reliable performance 🔄
- • **Plug & Play Ready:** Compatible with optional relay harness or female crimp connectors for easy installation
- • **All-Weather Warrior:** Operates flawlessly from freezing cold to scorching heat 🌡️
- • **Compact & Lightweight:** Small 2.7cm size and just 40g per relay fits seamlessly into any setup
- • **Power Through Anything:** Handles up to 40A high current loads effortlessly ⚡

## Overview

The Ehdis 2 pcs Car Relay Kit features heavy-duty 4-pin SPST relays rated for 12V and 40A, designed to handle high current automotive applications. With a robust mechanical life exceeding 10,000 cycles and an operating temperature range from -30°C to +80°C, these compact relays ensure durable, reliable switching. Ideal for professionals seeking dependable, easy-to-install automotive relays that deliver consistent performance under extreme conditions.

## Description

Contact Data: Contact Material: AgSnO12 Contact Form: 1Z(C) / 1H(A) Contact Ratings: No: 40A 72VDC Contact Resistance: 100mMax at 6VDC 1A Max switching Current: 40A Max Switching Power: 560W Life Expectancy Electrical: 100,000 Operations (at 30 Operations/min) Life Expectancy Mechanical: 10,000,000 OperationsCoil Specification: Nominal Voltage(VDC): 12V Coil Resistance (1.8W): 80 Max Operate Voltage (VDC): 6.5~8.0 Mix Release (VDC): 1.2~3.6 Max Applicable Voltage (VDC): 14Characteristics: Temperature Range: -30°C ~+80°C Vibration Resistance: 10~55Hz, 1.5mm Shock Resistance: Operations Extremes: 10g Damage Limits: 100g Humidity: 40%~85% Insulation Resistance: 100m ohm Min at 500VDC Safety Standard: CCEE Dielectric Strength Between Open Contacts: 500VAC (for one minute/sec) Between Contact and coil: 750VAC (for one minute/sec) Operate Time: 7ms Release Time: 5ms Weigh: Approx. 35g

Review: Great replacement - Great replacement for a more expensive version
Review: Good price 👍 - Easy to fit and works well 👍😀

## Features

- Brand new heavy duty 4-prongs SPST relays
- 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
- Mechanical life of 10,000+ cycles

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01J5HWXNK |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 3,863 in Automotive ( See Top 100 in Automotive ) 6 in Car Relays |
| Colour | 4Pin 12V 40A |
| Customer Reviews | 4.6 4.6 out of 5 stars (4,119) |
| Date First Available | 27 July 2016 |
| Item Package Quantity | 2 |
| Item Weight | 40 g |
| Item model number | 2C05-12V |
| Manufacturer | Ehdis |
| Part number | 2C05-12V |
| Plug profile | Panel Mount |
| Product Dimensions | 2.7 x 2.7 x 2.5 cm; 40 g |
| Size | 2 PACK |
| Specification met | CCEE |
| Wattage | 560 watts |

## Product Details

- **Connector type:** 4-pin
- **Contact material:** Silver Tin Oxide
- **Contact type:** Normally Open
- **Current rating:** 40 Amps
- **Mounting type:** Panel Mount

## Images

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

## Questions & Answers

**Q: Does this have a built in flyback diode??**
A: No,its standard

**Q: Can I use this in a classic car for use with halogen headlamp conversion? Is a wirung diagram included?**
A: Should be fine. There’s a wiring diagram printed on the relays. If in doubt about the wiring there’s loads of “how to” videos on You tube.

**Q: would this relay work in a Fiat Punto 2001, for the electric windows?**
A: If it looks like yours and has the same scheme and voltage on it then yes

**Q: Does it come with a wiring diagram? I am slighting struggling to understand which is the ground, the power wire, and switch e.t.c**
A: The connection instruction as below:
85:To be connected to the ground chassis. Serves as the common ground connection to activate and magnetize and internal coil.
86: To be connected to a positive input 12V DC input. This is where a switch connected to a 12V DC input will be connected to on the relay. When power is sent to the relay through pin 86, the circuit is completed with pin 85 connected to a common ground, which activates and magnetizes in the internal coil.
87: Normally open contact, also known as NO. The connection between pin 87 and pin 30 is only made when the internal coil is activated or magnetized, which pin 30 can be connected to either a 12V DC positive input or to the ground chassis.
30: Common contact which can be connected to a 12V DC power input or to the ground chassis depending on the desired application. Pin 30 is always connected with pin 87a until the coil is magnetized, which pin 30 then becomes connected with pin 87

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great replacement
*by N***M on 19 August 2024*

Great replacement for a more expensive version

### ⭐⭐⭐⭐⭐ Good price 👍
*by G***T on 11 February 2024*

Easy to fit and works well 👍😀

### ⭐⭐⭐⭐⭐ As described
*by B***L on 17 May 2025*

As described

## Frequently Bought Together

- Ehdis 2 pcs Car Relay 12v 40 APM 4 Pin Relay Kit Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters
- Ehdis 2 PCS Car Relay 12V 40A, 5 Pin Coil, Automotive Relay Contactor Switch

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-02*