--- product_id: 418299233 title: "Solid State Relay SSR-40DA 40A Input 3-32V DC Output 24-380V AC with Heat Sink for Thermostat Temperature Controller" brand: "coliao" price: "€ 22.61" currency: EUR in_stock: true reviews_count: 4 category: "Coliao" url: https://www.desertcart.at/products/418299233-solid-state-relay-ssr-40da-40a-input-3-32v-dc store_origin: AT region: Austria --- # 40A high current capacity Includes heat sink for thermal management Wide 24-380V AC output range Solid State Relay SSR-40DA 40A Input 3-32V DC Output 24-380V AC with Heat Sink for Thermostat Temperature Controller **Brand:** coliao **Price:** € 22.61 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your control game with silent, powerful switching! ## Quick Answers - **What is this?** Solid State Relay SSR-40DA 40A Input 3-32V DC Output 24-380V AC with Heat Sink for Thermostat Temperature Controller by coliao - **How much does it cost?** € 22.61 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/418299233-solid-state-relay-ssr-40da-40a-input-3-32v-dc) ## Best For - coliao enthusiasts ## Why This Product - Trusted coliao brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Corrosion, moisture, and dust resistant for harsh industrial conditions - • **Ready-to-Install:** Comes with a heat sink and bolt-mount design for easy, reliable setup - • **Powerhouse Performance:** Handles up to 40A current for demanding industrial loads - • **Wide Voltage Compatibility:** Supports 3-32V DC input and 24-380V AC output for versatile control - • **Silent & Spark-Free Switching:** No mechanical noise or sparks, perfect for sensitive environments ## Overview The SSR-40DA is a robust solid state relay designed for professional-grade temperature control and automation. It supports a 3-32V DC input and switches up to 40A at 24-380V AC output, ensuring reliable, spark-free operation in harsh environments. Equipped with a heat sink and corrosion-resistant build, it’s ideal for industrial thermostats and PID controllers requiring silent, high-speed switching. ## Description Product description Solid State Relay SSR-40DA 40A Input 3-32V DC Output 24-380V AC with Heat Sink Features 1.High reliability, high efficiency and long lifespan. 2.No spark, no noise and no contact. 3.LED indicator, high sensitivity and fast switching speed. 4.Low drive voltage and current. Notice 1. The current on the product is the maximum load current, not the rated current. 2. According to the different load characteristics, different margins should be left on the current level when selecting the model. Model: SSR-40 DA Solid State Relay Module Specification Control Voltage: 3-32V DC Load Voltage: 24-380V AC Load Current: 40A(Max) Control Method: DC to AC Mounting Method: Screw fixed On Voltage:<1V One-off Time:<10ms Off Leakage Current:<2mA Operating Ambient Temperature: -20~+75℃ Relay Size:62x 45 x 24mm / 2.48 x 1.73 x 0.94" ;Heat Sink Size: 8 x 4.9 x 4.9cm/ 3.1 x 1.9 x 1.9" (L*W*H) Package Content Solid State Relay SSR-40 DA + Heat Sink ## Features - 【Model】SSR-40DA 40A 250V Solid State Relay Module, for PID thermostat temperature controller - 【SSR-40DA Parameter】Solid state module relay SSR-40DA, 3-32VDC/24-480VAC, control mode: DC to AC - 【Relay Size】(L*W*H)63×44×24mm/2.48 x 1.73 x 0.94" - 【SSR Application】No electric spark, no noise, high switching speed, especially suitable for corrosion, moisture, dust resistant and other harsh environments. Widely used in many automatic control systems - 【Package Content】 1 x SSR-40 DA solid state relay module, 1 x heat sink ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09NR5KN8P | | Best Sellers Rank | #23,411 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Solid State Relays | | Brand | Coliao | | Brand Name | Coliao | | Coil Voltage | 32 Volts (DC) | | Connector Type | Screw | | Contact Current Rating | 40 Amps | | Contact Material | Silver | | Contact Type | Normally Open | | Current Rating | 40 Amps | | Customer Reviews | 4.6 out of 5 stars 22 Reviews | | Manufacturer | Coliao | | Maximum Switching Current | 40 Amps | | Model | Coliao-SSR-40DA | | Mounting Type | bolt-mounted | | Operation Mode | Electric | | Part Number | Coliao-SSR-40DA | | UPC | 701715495739 | ## Product Details - **Connector Type:** Screw - **Contact Material:** Silver - **Contact Type:** Normally Open - **Current Rating:** 40 Amps - **Mounting Type:** bolt-mounted ## Images ![Solid State Relay SSR-40DA 40A Input 3-32V DC Output 24-380V AC with Heat Sink for Thermostat Temperature Controller - Image 1](https://m.media-amazon.com/images/I/71KifVymWgL.jpg) ![Solid State Relay SSR-40DA 40A Input 3-32V DC Output 24-380V AC with Heat Sink for Thermostat Temperature Controller - Image 2](https://m.media-amazon.com/images/I/71FpzILWt5L.jpg) ![Solid State Relay SSR-40DA 40A Input 3-32V DC Output 24-380V AC with Heat Sink for Thermostat Temperature Controller - Image 3](https://m.media-amazon.com/images/I/61VWKQpmrhL.jpg) ![Solid State Relay SSR-40DA 40A Input 3-32V DC Output 24-380V AC with Heat Sink for Thermostat Temperature Controller - Image 4](https://m.media-amazon.com/images/I/61m1P44N5TL.jpg) ![Solid State Relay SSR-40DA 40A Input 3-32V DC Output 24-380V AC with Heat Sink for Thermostat Temperature Controller - Image 5](https://m.media-amazon.com/images/I/61Sq3XUl9FL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by S***L on February 19, 2023* ### ⭐⭐⭐⭐⭐ Review *by L***. on January 4, 2024* ### ⭐⭐⭐ Review *by C***T on June 25, 2025* ## Frequently Bought Together - Solid State Relay SSR-40DA 40A Input 3-32V DC Output 24-380V AC with Heat Sink for Thermostat Temperature Controller - Inkbird PID Temperature Controller Kit, High Voltage 100ACV to 240ACV, Comes with SSR 40DA Solid State Relay, K Type Thermocouple, and White Heat Sink - DaierTek 30A 250V KCD2 KCD4 Rocker Switch DPST 4 Pin Red Lighted 120V Rocker Toggle Switch ON Off Heavy Duty T125-3Pack --- ## 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.at/products/418299233-solid-state-relay-ssr-40da-40a-input-3-32v-dc](https://www.desertcart.at/products/418299233-solid-state-relay-ssr-40da-40a-input-3-32v-dc) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-05-05*