--- product_id: 235566368 title: "CG Solid State Relay SSR-40DA DC to AC Input 3-32VDC to Output 24-480VAC 40A Single Phase Plastic Cover…" brand: "cgele" price: "₹ 2250" currency: INR in_stock: true reviews_count: 9 category: "Cgele" url: https://www.desertcart.in/products/235566368-cg-solid-state-relay-ssr-40da-dc-to-ac-input store_origin: IN region: India --- # 40A high current capacity 3-32V DC input to 24-480V AC output Thermal grease included for heat dissipation CG Solid State Relay SSR-40DA DC to AC Input 3-32VDC to Output 24-480VAC 40A Single Phase Plastic Cover… **Brand:** cgele **Price:** ₹ 2250 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your control game with silent, powerful switching! ## Quick Answers - **What is this?** CG Solid State Relay SSR-40DA DC to AC Input 3-32VDC to Output 24-480VAC 40A Single Phase Plastic Cover… by cgele - **How much does it cost?** ₹ 2250 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/235566368-cg-solid-state-relay-ssr-40da-dc-to-ac-input) ## Best For - cgele enthusiasts ## Why This Product - Trusted cgele brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Anti-corrosion, moisture-proof, and vibration-resistant for reliable long-term operation - • **Silent Switching:** No sparks or noise thanks to solid-state design—perfect for noise-sensitive environments - • **Cool Under Pressure:** Includes thermal grease to maximize heat dissipation and extend relay lifespan - • **Powerhouse Performance:** Handles up to 40A for heavy-duty industrial and home automation needs - • **Plug & Play Compatibility:** Supports 3-32V DC input and outputs 24-480V AC, fitting a wide range of control systems ## Overview The CG Solid State Relay SSR-40DA is a robust, single-phase relay designed for seamless DC to AC switching with a 40A current rating. Featuring a compact design with included thermal grease for enhanced heat management, it ensures silent, spark-free operation ideal for industrial automation and temperature control systems. Built with durable materials and electromagnetic compatibility, it guarantees long-lasting, reliable performance in demanding environments. ## Description Product description Widely Application Solid state relays can be widely used to control computer peripheral devices, thermostats and resistance furnaces, AC motors, intermediate relays and solenoid valves, copiers and fully automatic washing machines, signal lights, traffic lights and scintillators, lighting and stage lighting, CNC remote control systems, automatic fire protection and security systems, high-power thyristor triggering and industrial automation equipment, etc. Advantage It is specially designed for harsh environments with corrosion, humidity or light-proof/explosion-proof requirements and frequent turn-on/off requirements. Single Phase Solid State Relay with LED indicator Think more than others Each package with 2 mini bag of thermal grease which apply on the back of the SSR to make the temperature dissipate faster. Steps are as follows 1.Wipe the back of the SSR clean to remove the dust. 2.Squeeze some thermal grease on the SSR back. 3.Use the brush to spread the thermal grease. 4.Apply thermal grease evenly. DC to AC/Input 3-32VDC To Output 24-480VAC /Maximum Current 40A SSR series solid state relays (screw terminal connection) are of high strength, impact resistance and strong vibration resistance, with low requirement for input current. They can be easily connected with digital control circuits of computers. . They are updated products of AC and DC contactors. They are specially designed for harsh environments with corrosion, humidity or light-proof/explosion-proof requirements and frequent turn-on/off requirements. The current on the product is the maximum load current, not the rated current. Features How to choose correctly STEP 1: Choose a correct type Current of Equipment/Ratio = Current of SSR PS: The Ratio depend on the kind of your loading equipment. Resistive load :70%, Inductive load:20%,Capacitive load：10%. STEP 2: Choose a suitable heat sink During the useage of SSR, it will give out a lot of heat, so in order to extend the life of your SSR, please install a heat sink , also if the current is over 60A,the cooling fan also required. PS: Our Heat Sink include 2 screws (for install heat sink) and a pack of thermal compound (is applied to the bottom of the SSR) Review: Great relay! - Perfect relay for the job. Fast shipping. Thanks Review: Got our yard sprinklers working again! - Be sure to mount these to a heat sink or metal surface for cooling. Our old one burned out because the mounting screws rusted off and the unit overheated. ## Features - ♥【What You Get】Each package With 2 mini bag of thermal grease which apply on the back of the SSR to make the temperature dissipate faster. - ♥ Product Name: solid state module relay SSR-40DA, 3-32VDC/24-480VAC ; Current & Frequency:40A,50/60Hz. - ♥ Total size (approximate):58 x 45 x 32mm/2.3" x 1.8" x 1.26" (l*w*t); Net weight:116g; Material:metal, plastic, electronic parts. - ♥ SSR Application: with a switch no spark, no noise,high switching speed,anti-corrosion,moisture-proof,anti-vibration,long life.high reliability,electromagnetic compatibility and other characteristics. - ♥ Solid state relay ideal for automatic process control application, a must component for temperature controller and other machinery control system. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08GPB7N2T | | Best Sellers Rank | #11,251 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Solid State Relays | | Brand | CGELE | | Brand Name | CGELE | | Coil Voltage | 3 Volts (DC) | | Connector Type | Screw | | Contact Current Rating | 40 Amps | | Contact Material | Silver Alloy Or Copper Alloy | | Contact Type | Normally Open | | Current Rating | 40 Amps | | Customer Reviews | 4.6 out of 5 stars 138 Reviews | | Manufacturer | CGELE | | Maximum Switching Current | 40 Amps | | Minimum Switching Voltage | 3 Volts (DC) | | Model | DC to AC 40A | | Mounting Type | DIN Rail Mount | | Number of Terminals | 3 | | Operation Mode | Automatic | | Specification Met | Electromagnetic Compatibility | | UPC | 774297736439 | | Unit Count | 1.0 Count | ## Product Details - **Connector Type:** Screw - **Contact Material:** Silver Alloy Or Copper Alloy - **Contact Type:** Normally Open - **Current Rating:** 40 Amps - **Mounting Type:** DIN Rail Mount ## Images ![CG Solid State Relay SSR-40DA DC to AC Input 3-32VDC to Output 24-480VAC 40A Single Phase Plastic Cover… - Image 1](https://m.media-amazon.com/images/I/71vgqZmxIuL.jpg) ![CG Solid State Relay SSR-40DA DC to AC Input 3-32VDC to Output 24-480VAC 40A Single Phase Plastic Cover… - Image 2](https://m.media-amazon.com/images/I/71HgzcloN6L.jpg) ![CG Solid State Relay SSR-40DA DC to AC Input 3-32VDC to Output 24-480VAC 40A Single Phase Plastic Cover… - Image 3](https://m.media-amazon.com/images/I/61i4tbdZvIL.jpg) ![CG Solid State Relay SSR-40DA DC to AC Input 3-32VDC to Output 24-480VAC 40A Single Phase Plastic Cover… - Image 4](https://m.media-amazon.com/images/I/719PmsHjfRL.jpg) ![CG Solid State Relay SSR-40DA DC to AC Input 3-32VDC to Output 24-480VAC 40A Single Phase Plastic Cover… - Image 5](https://m.media-amazon.com/images/I/71y8PEVtNQL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Is this a zero-crossing relay?** A: The short answer is NO..... However I think a more detailed explanation is required. A "Zero Crossing" circuit is more an AC control method rather than this: it is a DC input to AC output device... meaning any DC voltage greater than 3VDC is considered on "On" signal and this On signal turns on a AC load (24-480VAC). ... SO a small DC input signal turns on the larger AC load. Make sense? **Q: Is there a difference between using 5V vs 30V for control current? Does it affect performace of solid state switch?** A: This product can control whether the alternating current appliance(s) connected to it are energized or not with anywhere from 3 - 32 Volts of Direct Current. Any direct current voltage within this range is adequate enough to flip the switch within the device that closes the alternating current side of the switch. An appliance on the alternating current side of the switch works no better or worse depending upon the voltage on the direct current side of this switch the energizes the switch (not the appliance)--provided it is from 2 -32V--anymore than a window air conditioner works better or worse if a young weak child, or a bodybuilder turns its switch on. **Q: The output spec is 24-480Vac. Will it work for 20Vac load voltage?** A: No you need at least 24V to a max of 480V or anywhere in between **Q: Can it be used to power on a thermostate (c wire) that is 24vac (0.5 amp) from 12v dc?** A: Dear Customer:Yes. the input is 3-32VDC. and output side is 24-480VAC. you should connect power seperately. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great relay! *by M***S on April 22, 2026* Perfect relay for the job. Fast shipping. Thanks ### ⭐⭐⭐⭐⭐ Got our yard sprinklers working again! *by R***. on February 4, 2026* Be sure to mount these to a heat sink or metal surface for cooling. Our old one burned out because the mounting screws rusted off and the unit overheated. ### ⭐⭐⭐⭐⭐ Solid and reliable. *by E***. on December 26, 2025* Good SSR for a good price. Been using for a couple months now with zero issues. I'm using the 40A model for only ~6 amps, 120V, which could be why lol. But the higher amperage models aren't much more expensive anyway. Haven't noticed any heat buildup or noise. Super easy to get set up with fork connectors, and the input switching supply needs only be a couple dozen milliamps. ## Frequently Bought Together - CG Solid State Relay SSR-40DA DC to AC Input 3-32VDC To Output 24-480VAC 40A Single Phase Plastic Cover… - CGELE 3PCS Aluminum Heat Sink SSR Dissipation for Single Phase Solid State Relay 10A,25A,40A Black Radiator… - CGELE Solid State Relay SSR-40AA AC to AC Input 70-250VAC to Output 24-480VAC 40A Single Phase Plastic Cover --- ## 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.in/products/235566368-cg-solid-state-relay-ssr-40da-dc-to-ac-input](https://www.desertcart.in/products/235566368-cg-solid-state-relay-ssr-40da-dc-to-ac-input) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-06-01*