--- 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: "RM177" currency: MYR in_stock: false reviews_count: 5 category: "Yeeco" url: https://www.desertcart.com.my/products/393552914-yeeco-30a-high-current-12v-contactor-relay-switch-power-switch store_origin: MY region: Malaysia --- # 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:** RM177 **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?** RM177 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/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! ## Frequently Bought Together - 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 - Electromagnetic Power Relay, 8-Pin 10 AMP 12V DC Relay Coil with Socket Base, LED Indicator, DPDT 2NO 2NC - MY2NJ [Applicable for DIN Rail System] - EPLZON NT90-DC12V-10X Power Relay DC 12V Coil 120 VAC 30A 40A SPDT(1NO 1NC) with Flange Mounting and 10 Quick Connect Terminals Wires Mini Relay(Pack of 2pcs) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.my/products/393552914-yeeco-30a-high-current-12v-contactor-relay-switch-power-switch](https://www.desertcart.com.my/products/393552914-yeeco-30a-high-current-12v-contactor-relay-switch-power-switch) --- *Product available on Desertcart Malaysia* *Store origin: MY* *Last updated: 2026-05-10*