--- product_id: 63513776 title: "1-Channel 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Module Electrical Relay switches for Cooler Heater Refit Water Heater Control(DC 12V)" brand: "knacro" price: "16248CFA" currency: XOF in_stock: true category: "Knacro" url: https://www.desertcart.sn/products/63513776-1-channel-30a-high-current-12v-contactor-relay-switch-power store_origin: SN region: Senegal --- # 30A high current capacity Supports up to 250V switching voltage Ultra-small optocoupler for anti-interference 1-Channel 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Module Electrical Relay switches for Cooler Heater Refit Water Heater Control(DC 12V) **Brand:** knacro **Price:** 16248CFA **Availability:** ✅ In Stock ## Summary > ⚡ Command your power with precision and reliability! ## Quick Answers - **What is this?** 1-Channel 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Module Electrical Relay switches for Cooler Heater Refit Water Heater Control(DC 12V) by knacro - **How much does it cost?** 16248CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/63513776-1-channel-30a-high-current-12v-contactor-relay-switch-power) ## Best For - knacro enthusiasts ## Why This Product - Trusted knacro brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Control:** Simple 4-terminal interface for seamless integration with coolers, heaters, and more. - • **Voltage Versatility:** Switches up to 250V AC/DC, perfect for diverse electrical setups. - • **Interference Immunity:** Built-in ultra-small optocoupler ensures stable, noise-free operation. - • **Powerhouse Performance:** Handles a robust 30A current for heavy-duty applications. - • **Rock-Solid Connections:** 9.5mm black fence terminal guarantees secure and reliable wiring. ## Overview The KNACRO 1-Channel 30A High Current 12V Contactor Relay Switch is a premium DC power switching control board designed for demanding electrical applications. Featuring a 30A current rating and up to 250V switching voltage, it ensures robust performance for controlling coolers, heaters, and water heaters. Its ultra-small optocoupler enhances anti-interference capabilities, while the sturdy 9.5mm black fence terminal provides reliable connectivity. Ideal for professionals seeking dependable, high-capacity relay control in compact form. ## Description 30A single channel relay of 4 terminal shunt; It can be used to cooler control ,heater control ,refit water heater control; 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; Control current :max 30A; Maximum control voltage:250V; Coil current:60MA; Module Interface Description: 1, DC +: external DC power supply positive 2, DC-: external DC power supply negative 3, NO: relay normally open interface (relay pull before the suspension, after pull the connection with the COM). 4, COM: relay common interface packing including： 1x 5V 12V 24V relay Switch ## Features - Input: 5V 12V 24V DC (relay powered); - Load:AC 250V 30A,DC 30V 30A; - 30A High Current 12V Contactor relay Switch DC power Switching Control Board; - Using high-quality ultra-small optocoupler, anti-interference ability, stable performance. - Using 9.5mm black fence terminal, standard 30A terminal, stable and solid, reliable quality. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06XPB9PNT | | Best Sellers Rank | #1,735,350 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8,188 in Power Converters | | Brand Name | KNACRO | | Coil Voltage | 12 Volts | | Contact Current Rating | 30 Amps | | Contact Type | Normally Open | | Current Rating | 30 Amps | | Customer Reviews | 5.0 5.0 out of 5 stars (1) | | Manufacturer | KNACRO | | Maximum Switching Current | 30 Amps | | Maximum Switching Voltage | 250 Volts | | Model | 1-Channel 30A Relay Module | | Operation Mode | Electrical | | Part Number | 1-Channel 30A Relay Module | | UPC | 713653013104 | ## Product Details - **Brand:** KNACRO - **Coil Voltage:** 12 Volts - **Contact Type:** Normally Open - **Current Rating:** 30 Amps - **Operation Mode:** Electrical ## Images ![1-Channel 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Module Electrical Relay switches for Cooler Heater Refit Water Heater Control(DC 12V) - Image 1](https://m.media-amazon.com/images/I/81sHa6wbzhL.jpg) ![1-Channel 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Module Electrical Relay switches for Cooler Heater Refit Water Heater Control(DC 12V) - Image 2](https://m.media-amazon.com/images/I/81F11HOgn4L.jpg) ![1-Channel 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Module Electrical Relay switches for Cooler Heater Refit Water Heater Control(DC 12V) - Image 3](https://m.media-amazon.com/images/I/61N2rX85MsL.jpg) ![1-Channel 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Module Electrical Relay switches for Cooler Heater Refit Water Heater Control(DC 12V) - Image 4](https://m.media-amazon.com/images/I/61c3yzCVQBL.jpg) ![1-Channel 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Module Electrical Relay switches for Cooler Heater Refit Water Heater Control(DC 12V) - Image 5](https://m.media-amazon.com/images/I/811B1aUJmoL.jpg) ## Available Options This product comes in different **Size** options. --- ## 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.sn/products/63513776-1-channel-30a-high-current-12v-contactor-relay-switch-power](https://www.desertcart.sn/products/63513776-1-channel-30a-high-current-12v-contactor-relay-switch-power) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-04-25*