--- product_id: 133918338 title: "TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink" brand: "twtade" price: "105.31 DT" currency: TND in_stock: true reviews_count: 13 category: "Twtade" url: https://www.desertcart.tn/products/133918338-twtade-ssr-40-dd-40a-dc-3-32v-to-dc store_origin: TN region: Tunisia --- # 40A max switching current Wide input/output voltage range Integrated heat sink for thermal stability TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink **Brand:** twtade **Price:** 105.31 DT **Availability:** ✅ In Stock ## Summary > ⚡ Stay cool and in control with the SSR-40DD – power your projects without the burnout! ## Quick Answers - **What is this?** TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink by twtade - **How much does it cost?** 105.31 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/133918338-twtade-ssr-40-dd-40a-dc-3-32v-to-dc) ## Best For - twtade enthusiasts ## Why This Product - Trusted twtade brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Thermal Mastery:** Comes with a robust heat sink to prevent overheating during continuous operation - • **Effortless Integration:** Screw connector and surface mount design for quick, secure installation - • **Powerhouse Performance:** Handles up to 40A switching current for demanding DC loads - • **Durability You Can Trust:** CE, RoHS, and UL certified for industrial-grade reliability - • **Flexible Voltage Compatibility:** Supports input voltages from 3-32V DC and output voltages from 5-60V DC ## Overview The TWTADE SSR-40 DD is a solid state relay designed for high-current DC switching applications, supporting up to 40 amps with a wide input/output voltage range (3-32V DC input, 5-60V DC output). It includes a heat sink to ensure stable, reliable performance during continuous use, making it ideal for industrial and scientific setups requiring efficient, maintenance-free power control. ## Description About us Our company's principle is "service first, quality first". Our products include relays, potentiometers, rocker switches, tactile switches, toggle switches, selector switches, emergency stop switches, limit switches, push button switches, thermocouples, counters, etc. About us Our company's principle is "service first, quality first". Our products include relays, potentiometers, rocker switches, tactile switches, toggle switches, selector switches, emergency stop switches, limit switches, push button switches, thermocouples, counters, etc. Power Relay Visit the Store Power Relay Visit the Store Valve Core Visit the Store Valve Core Various Product Visit the Store Various Product Toggle Switch Visit the Store Toggle Switch Rocker Switch Visit the Store Rocker Switch Polarity Reverse Switch Visit the Store Polarity Reverse Switch Push Button Switch Visit the Store Push Button Switch Potentiometer Visit the Store Potentiometer Tactile Switch Visit the Store Tactile Switch Limit Switch Visit the Store Limit Switch ## Features - Special attention: The current of this product is 10A for a long time.A large heat sink or fan need to be added.Model: SSR-40DD Solid State Relay 40A DC to DC - Input voltage: 3-32V DC Output voltage: 5-60V DC - Heat Sink Mounting Thread Diameter (Approx.) : 0.5cm / 0.19" - Heat Sink Total Size (Approx.) : 8 x 4.9 x 4.9cm / 3.1" x 1.9" x 1.9" (L * W * T ) - Package content: 1 x SSR + 1 x heat sink ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B079BGGVYX | | Best Sellers Rank | #86,663 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #24 in Solid State Relays | | Brand | TWTADE | | Brand Name | TWTADE | | Coil Voltage | 3 Volts (DC) | | Connector Type | Screw | | Contact Current Rating | 40 Amps | | Contact Type | Normally Open | | Current Rating | 10 Amps | | Customer Reviews | 3.9 out of 5 stars 186 Reviews | | Manufacturer | TWTADE | | Maximum Switching Current | 40 Amps | | Minimum Switching Voltage | 3 Volts (DC) | | Model | SSR | | Mounting Type | Surface Mount | | Operation Mode | Automatic | | Part Number | SSR | | Specification Met | CE, RoHS, UL | | UPC | 635648190440 | | Wattage | 32 watts | ## Product Details - **Brand:** TWTADE - **Connector Type:** Screw - **Contact Type:** Normally Open - **Current Rating:** 10 Amps - **Mounting Type:** Surface Mount ## Images ![TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink - Image 1](https://m.media-amazon.com/images/I/71UOK23ftuL.jpg) ![TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink - Image 2](https://m.media-amazon.com/images/I/71hQj2UM-fL.jpg) ![TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink - Image 3](https://m.media-amazon.com/images/I/61y300cvWNL.jpg) ![TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink - Image 4](https://m.media-amazon.com/images/I/61Kk6QIjJEL.jpg) ![TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink - Image 5](https://m.media-amazon.com/images/I/61tzGnPctmL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by S***S on October 31, 2020* ### ⭐ Review *by L***D on February 21, 2022* ### ⭐⭐⭐⭐⭐ Review *by A***R on April 10, 2020* --- ## 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.tn/products/133918338-twtade-ssr-40-dd-40a-dc-3-32v-to-dc](https://www.desertcart.tn/products/133918338-twtade-ssr-40-dd-40a-dc-3-32v-to-dc) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-26*