--- product_id: 47917996 title: "Single Phase DC/DC Solid State Relay, SSR-40DD, Input 4-32VDC, Output 24-220VDC, 40A 50-60Hz" brand: "heschen" price: "4589 kr" currency: ISK in_stock: true reviews_count: 13 category: "Heschen" url: https://www.desertcart.is/products/47917996-single-phase-dc-dc-solid-state-relay-ssr-40dd-input store_origin: IS region: Iceland --- # 40A high load current Wide input control voltage 4-32VDC Output voltage range 24-220VDC Single Phase DC/DC Solid State Relay, SSR-40DD, Input 4-32VDC, Output 24-220VDC, 40A 50-60Hz **Brand:** heschen **Price:** 4589 kr **Availability:** ✅ In Stock ## Summary > ⚡ Switch to the future of power control with solid state precision! ## Quick Answers - **What is this?** Single Phase DC/DC Solid State Relay, SSR-40DD, Input 4-32VDC, Output 24-220VDC, 40A 50-60Hz by heschen - **How much does it cost?** 4589 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/47917996-single-phase-dc-dc-solid-state-relay-ssr-40dd-input) ## Best For - heschen enthusiasts ## Why This Product - Trusted heschen brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Certified Quality:** CE and ISO9001 certified for trusted industrial-grade reliability - • **Durable & Reliable:** Solid state design ensures silent, maintenance-free switching - • **Powerhouse Performance:** Handles up to 40A load current for demanding applications - • **Versatile Output Range:** Supports 24-220VDC output, perfect for diverse DC systems - • **Flexible Voltage Control:** Operates seamlessly with 4-32VDC input control voltage ## Overview The Heschen SSR-40DD is a robust single-phase DC/DC solid state relay designed for high-current switching up to 40A and output voltages between 24-220VDC. With a flexible input control voltage range of 4-32VDC, it offers silent, maintenance-free operation backed by CE and ISO9001 certifications, making it ideal for professional industrial and electric vehicle applications. ## Description Product Description Review: Very effective switching capability. - Needed a relay to handle 130vdc switching for my electric car conversion triggered from 12vdc supply, this works brilliantly. So far working really well, am considering replacing other high load mechanical relays with similar SSR’s, will update later when used for a while to give overall feedback. Review: Very poor quality - some of them are DANGEROUS! - I took delivery of two. Both were being used at 110V DC, switching 20A. (well within ratings). The first one was just closed circuit (the power switching inputs shorted). The indicator didn't light and it destroyed the driver circuit. It turned out all four screw terminals were shorted to the heatsink. Re-build driver (with fuses) and tried the second one. At first it appeared to work - the indicator turned on and the switching circuit closed. Unfortunately when the driver tried to turn it off, it literally blew itself to bits! The metal plate on the back detached with half the transistor attached. Smoke coming out of the other bit. I've since replaced them with a pair of Futek SSR-40DD SSRs which work just fine. ## Features - Load current: 40A - Load Voltage: 24-220VDC - Control Voltage: 4-32VDC - LED working instructions - CE ISO9001 listed ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0716RTYMD | | Best Sellers Rank | 18,519 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 4 in Solid State Relays | | Brand | Heschen | | Coil Voltage | 4 Volts (DC) | | Connector Type | Screw | | Connector type | Screw | | Contact Current Rating | 40 Amps | | Contact Material | Metal | | Contact Type | Normally Open | | Contact material | Metal | | Contact type | Normally Open | | Country Of Origin | China | | Current Rating | 40 Amps | | Current rating | 40 Amps | | Customer Reviews | 3.6 out of 5 stars 103 Reviews | | Manufacturer | Shanghai Kunerjing Current Rectifier Co.Ltd | | Manufacturer Part Number | GJX40DD | | Minimum Switching Voltage | 4 Volts (DC) | | Model Number | SSR-40DD | | Mounting Type | Screw Mount | | Mounting type | Screw Mount | | Number of Terminals | 1 | | Operation Mode | Off | | Specification Met | CE | | UPC | 670534168578 | | Unit Count | 1.0 count | | Wattage | 8800 watts | ## Product Details - **Connector type:** Screw - **Contact material:** Copper - **Contact type:** Normally Open - **Current rating:** 40 Amps - **Mounting type:** Screw Mount ## Images ![Single Phase DC/DC Solid State Relay, SSR-40DD, Input 4-32VDC, Output 24-220VDC, 40A 50-60Hz - Image 1](https://m.media-amazon.com/images/I/71qsnjJSbWL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very effective switching capability. *by S***M on 11 November 2019* Needed a relay to handle 130vdc switching for my electric car conversion triggered from 12vdc supply, this works brilliantly. So far working really well, am considering replacing other high load mechanical relays with similar SSR’s, will update later when used for a while to give overall feedback. ### ⭐ Very poor quality - some of them are DANGEROUS! *by S***R on 23 September 2022* I took delivery of two. Both were being used at 110V DC, switching 20A. (well within ratings). The first one was just closed circuit (the power switching inputs shorted). The indicator didn't light and it destroyed the driver circuit. It turned out all four screw terminals were shorted to the heatsink. Re-build driver (with fuses) and tried the second one. At first it appeared to work - the indicator turned on and the switching circuit closed. Unfortunately when the driver tried to turn it off, it literally blew itself to bits! The metal plate on the back detached with half the transistor attached. Smoke coming out of the other bit. I've since replaced them with a pair of Futek SSR-40DD SSRs which work just fine. ### ⭐⭐⭐⭐ Watch out for the leakage when in the off state in your usage designs *by T***E on 13 July 2023* If you intend to use this device as a replacement for old style mechanical switch relays be aware that this device has a leakage when in the off state, so you can't rely on it as a total safety isolation device. Having said that, for motor control the application I am using it in it's fine, does the job and is easy to interface to driver electronics. ## Frequently Bought Together - Heschen Single Phase DC/DC Solid State Relay, SSR-40DD, Input 4-32VDC, Output 24-220VDC, 40A 50-60Hz - PTC Air Heater Energy Saving Ceramic Heater Electric Thermostatic Insulated PTC Heater Temperature Heating Element Heaters with Fan 220V 300W for Heater Humidifier Air Conditioning Appliances --- ## 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.is/products/47917996-single-phase-dc-dc-solid-state-relay-ssr-40dd-input](https://www.desertcart.is/products/47917996-single-phase-dc-dc-solid-state-relay-ssr-40dd-input) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-06-19*