--- product_id: 212427239 title: "30A : 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: "211 zł" currency: PLN in_stock: false reviews_count: 5 category: "Yeeco" url: https://www.desertcart.pl/products/212427239-30a-yeeco-30a-high-current-12v-contactor-relay-switch-power store_origin: PL region: Poland --- # 30A : 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:** 211 zł **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** 30A : 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?** 211 zł with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/212427239-30a-yeeco-30a-high-current-12v-contactor-relay-switch-power) ## Best For - yeeco enthusiasts ## Why This Product - Trusted yeeco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description 30A : 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 : desertcart.in: Home & Kitchen 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00MKWACVI | | Brand | Yeeco | | Brand Name | Yeeco | | Coil Voltage | 12 Volts | | Connector Type | Screw | | Contact Current Rating | 30 Amps | | Contact Material | Silver Alloy | | Contact Type | Normally Open | | Country of Origin | USA | | Current Rating | 30 Amps | | Customer Reviews | 4.5 out of 5 stars 203 Reviews | | Item Weight | 0.02 Pounds | | Maximum Switching Current | 30 Amps | | Maximum Switching Voltage | 12 Volts | | Mounting Type | DIN Rail Mount | | Operation Mode | Automatic | | Specification Met | IEC/EN 60947 | | UPC | 701203237612 070120323761 | ## Product Details - **Connector Type:** Screw - **Contact Material:** Silver Alloy - **Contact Type:** Normally Open - **Current Rating:** 30 Amps - **Mounting Type:** DIN Rail Mount ## Images ![30A : 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/61pQwZf6H4L.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.pl/products/212427239-30a-yeeco-30a-high-current-12v-contactor-relay-switch-power](https://www.desertcart.pl/products/212427239-30a-yeeco-30a-high-current-12v-contactor-relay-switch-power) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-26*