---
product_id: 393552914
title: "Yeeco 30A High Current 12V Contactor relay Switch Power Switch DC power Switching Control Board Control Module electrical relay switches for Cooler Heater Refit Water Heater Control"
brand: "yeeco"
price: "€ 40.56"
currency: EUR
in_stock: false
reviews_count: 5
category: "Yeeco"
url: https://www.desertcart.fi/products/393552914-yeeco-30a-high-current-12v-contactor-relay-switch-power-switch
store_origin: FI
region: Finland
---

# 30A max current capacity 12V DC coil voltage 4-terminal shunt design Yeeco 30A High Current 12V Contactor relay Switch Power Switch DC power Switching Control Board Control Module electrical relay switches for Cooler Heater Refit Water Heater Control

**Brand:** yeeco
**Price:** € 40.56
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Switch to power, precision, and peace of mind — control your current like a pro!

## Quick Answers

- **What is this?** Yeeco 30A High Current 12V Contactor relay Switch Power Switch DC power Switching Control Board Control Module electrical relay switches for Cooler Heater Refit Water Heater Control by yeeco
- **How much does it cost?** € 40.56 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/393552914-yeeco-30a-high-current-12v-contactor-relay-switch-power-switch)

## Best For

- yeeco enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Silver alloy contacts and IEC/EN 60947 certification guarantee durability and safety.
- • **Precision Control:** Operates on a stable 12V DC coil voltage ensuring reliable switching every time.
- • **Compact & Versatile:** Slim 0.7-inch profile with DIN rail mount fits seamlessly into professional setups.
- • **Powerhouse Performance:** Handles up to 30A high current loads effortlessly for your heavy-duty devices.
- • **Smart Spike Protection:** Integrated capacitor and diode protect sensitive electronics from voltage spikes.

## Overview

The Yeeco 30A High Current 12V Contactor Relay Switch is a compact, DIN rail-mountable control module designed for high-load DC power switching. Featuring a 30A max current rating, silver alloy normally open contacts, and built-in spike protection, it’s ideal for controlling coolers, heaters, and water heaters with professional-grade reliability and efficiency.

## Description

30A High Current 12V Contactor relay Switch DC power Switching Control Board electrical relay switches Input: DC 12V (relay powered) Output: 30A single channel relay of 4 terminal shunt(Two Input and Two Output) Control current ：max 30A Maximum control voltage：250V coil current:60MA packing including： 1x 12V relay Switch

Review: Works fine - happy with it. Do wish the screw terminals were bigger. - Worked fine out of the box. Small / compact. Wish the screw terminals were bigger to support a standard lug. On this unit I had to use the smaller lugs (which I had on hand). Because i used this as an interface with my Honeywell Vista 20P, trigger 17 (Programmable Output) for my alarm siren / bell / accessories.... I needed a reply that did not have an optical sensor.... just a straight contact to the relay and low current consumption rating on the coil. The Vista 20P has limited output for trigger 17 (limit to max 100ma).... so I also removed one leg of the small led on the board to not light up. You can add a led on the output of the relay contact if you really need a led to show you when the relay is activated. This saved about 5 ma which reduced my limit on trigger 17 output. What is nice about this is the fact I did not have to spend another $100 bucks for a honeywell add-on power supply that only supported 1.5 Amps, and a honeywell relay board. By connecting the output of trigger 17 to this relay directly, then using a separate battery and power supply to support the Wiper/NO contact loads on the output side.... I am able to run up to 30 Amps if desired .... but really only using about 5 amps at this time for everything. This relay board also has a nice large value capacitor across the coil, and I recall a diode as well... This helps with any spikes from the coil and/or reverse current when the relay disengages.... the spike can effect sensitive item (chips). I had no problems with this replay on my Vista 20P board. I made a plex-glass board for 2 of these relays which fits exactly into the slotted spaces in the Vista 20P box, and mounts perfectly.
Review: High quality relay will give YEARS of trouble free service - These relays are routinely hooked up to motion sensors which activate the relay to fire banks of lighting in corridors of large buildings.

## Features

- Input: 12V DC (relay powered)
- Control voltage: 250V Max
- 30A High Current 12V Contactor relay Switch DC power Switching Control Board
- 30A single channel relay of 4 terminal shunt(Two Input and Two Output)
- It can be used to cooler control ,heater control ,refit water heater control

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00MKWACVI |
| Brand | Yeeco |
| Brand Name | Yeeco |
| Coil Voltage | 12 Volts |
| Connector Type | Through Hole |
| Connector type | Through Hole |
| Contact Current Rating | 30 Amps |
| Contact Material | Silver Alloy |
| Contact Type | Normally Open |
| Contact material | Silver Alloy |
| Contact type | Normally Open |
| Current Rating | 30 Amps |
| Current rating | 30 Amps |
| Customer Reviews | 4.5 out of 5 stars 203 Reviews |
| Item Weight | 0.02 Pounds |
| Item height | 0.7 inches |
| Manufacturer | Yeeco |
| Maximum Switching Current | 30 Amps |
| Minimum Switching Voltage | 12 Volts (DC) |
| Mounting Type | DIN Rail Mount |
| Mounting type | DIN Rail Mount |
| Operation Mode | Manual |
| Specification Met | IEC/EN 60947 |
| UPC | 701203237612 070120323761 |

## Product Details

- **Connector type:** Through Hole
- **Contact material:** Silver Alloy
- **Contact type:** Normally Open
- **Current rating:** 30 Amps
- **Mounting type:** DIN Rail Mount

## Images

![Yeeco 30A High Current 12V Contactor relay Switch Power Switch DC power Switching Control Board Control Module electrical relay switches for Cooler Heater Refit Water Heater Control - Image 1](https://m.media-amazon.com/images/I/617oaWoQS3L.jpg)
![Yeeco 30A High Current 12V Contactor relay Switch Power Switch DC power Switching Control Board Control Module electrical relay switches for Cooler Heater Refit Water Heater Control - Image 2](https://m.media-amazon.com/images/I/61FjYBZG+HL.jpg)
![Yeeco 30A High Current 12V Contactor relay Switch Power Switch DC power Switching Control Board Control Module electrical relay switches for Cooler Heater Refit Water Heater Control - Image 3](https://m.media-amazon.com/images/I/61cliLbM8sL.jpg)
![Yeeco 30A High Current 12V Contactor relay Switch Power Switch DC power Switching Control Board Control Module electrical relay switches for Cooler Heater Refit Water Heater Control - Image 4](https://m.media-amazon.com/images/I/61pQwZf6H4L.jpg)
![Yeeco 30A High Current 12V Contactor relay Switch Power Switch DC power Switching Control Board Control Module electrical relay switches for Cooler Heater Refit Water Heater Control - Image 5](https://m.media-amazon.com/images/I/61rfPEo3RsL.jpg)

## Questions & Answers

**Q: Id like to mount this in a metal outlet box but how do i isolate the relay contacts on the back of relay from the metal outlet box?**
A: First, it is good to hear that you are aware of the need.  Yes, you can do it easily or more accurately.  the easy way is to use 2 or 3 foam pads stacked on each other and attach to the back and then the metal box.  This is a once and done method.  The more service able way is to get some small 1" long bolts that will fit into the 4 holes on the corners, and bolt it to the metal box, using a piece of cardboard or stiff material to attach on the back and use 1/2" spacers or nuts to assure that the back of the PC board is above the  metal back at least 3/8".

**Q: Can this relay be used with a Arduino Uno or Nano?**
A: Not directly. This relay requires 12v to switch. Arduino only handles 5v. You can use a transistor but the simplest solution is to find a 5v version

**Q: Can you use relay be used to switch my dc power from my solar panels to ac to my water heater element**
A: I believe it can. I used mine to start a sup pump in the basement in case water flooded the place. I wired to a sensor float and then to the pump. I have a 12 volt battery to provide the power for the switching.

**Q: says 30A @240, so can I put 15A @110v load on this ?**
A: As the electrical theory goes: Watts = Amps x Volts
Examples:
10 Amps x 120 Volts = 1200 Watts
5 Amps x 240 Volts = 1200 Watts
So when you do math you will find that 65.4545~ Amps x 110 Volts = 7200 Watts.  Which is the same amount of Watts when you do the math 30 Amps x 240 Volts = 7200 Watts.  So 15A at 110 volts would be barely using the capacity of this relay.  I hope this helps you.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works fine - happy with it. Do wish the screw terminals were bigger.
*by N***6 on 1 April 2023*

Worked fine out of the box. Small / compact. Wish the screw terminals were bigger to support a standard lug. On this unit I had to use the smaller lugs (which I had on hand). Because i used this as an interface with my Honeywell Vista 20P, trigger 17 (Programmable Output) for my alarm siren / bell / accessories.... I needed a reply that did not have an optical sensor.... just a straight contact to the relay and low current consumption rating on the coil. The Vista 20P has limited output for trigger 17 (limit to max 100ma).... so I also removed one leg of the small led on the board to not light up. You can add a led on the output of the relay contact if you really need a led to show you when the relay is activated. This saved about 5 ma which reduced my limit on trigger 17 output. What is nice about this is the fact I did not have to spend another $100 bucks for a honeywell add-on power supply that only supported 1.5 Amps, and a honeywell relay board. By connecting the output of trigger 17 to this relay directly, then using a separate battery and power supply to support the Wiper/NO contact loads on the output side.... I am able to run up to 30 Amps if desired .... but really only using about 5 amps at this time for everything. This relay board also has a nice large value capacitor across the coil, and I recall a diode as well... This helps with any spikes from the coil and/or reverse current when the relay disengages.... the spike can effect sensitive item (chips). I had no problems with this replay on my Vista 20P board. I made a plex-glass board for 2 of these relays which fits exactly into the slotted spaces in the Vista 20P box, and mounts perfectly.

### ⭐⭐⭐⭐⭐ High quality relay will give YEARS of trouble free service
*by E***R on 3 December 2020*

These relays are routinely hooked up to motion sensors which activate the relay to fire banks of lighting in corridors of large buildings.

### ⭐⭐⭐⭐⭐ Great value! Great product!
*by A***R on 7 November 2019*

Comes very well packaged and works like a charm. Excellent product!

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-14*