---
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: "€ 27.43"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.nl/products/133918338-twtade-ssr-40-dd-40a-dc-3-32v-to-dc
store_origin: NL
region: Netherlands
---

# 40A max current capacity Screw connector for secure fit Includes heat sink for thermal management TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink

**Brand:** twtade
**Price:** € 27.43
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your power game with silent, solid-state switching!

## 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?** € 27.43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/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

- • **Secure & Reliable:** Screw-type connectors guarantee a rock-solid connection for professional-grade installations.
- • **Thermal Stability:** Comes with a robust heat sink to keep your relay cool under pressure—no overheating fears.
- • **Wide Voltage Range:** Operates seamlessly from 3-32V input to 5-60V output, ensuring versatile compatibility.
- • **Compact & Efficient:** Surface mount design with a sleek footprint fits effortlessly into your high-tech projects.
- • **Powerhouse Performance:** Handles up to 40A DC switching with ease, perfect for demanding setups.

## Overview

The TWTADE SSR-40 DD is a high-capacity 40A DC-to-DC solid state relay designed for reliable, noiseless switching in professional electrical applications. Featuring a broad input/output voltage range (3-32V to 5-60V), screw connectors for secure installation, and an included heat sink for optimal thermal management, this compact surface-mount device ensures durability and efficiency in demanding environments.

## Description

Full description not available

## 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 |
|---------------|-------|
| Connector Type | Screw |
| Contact Type | Normally Open |
| Current Rating | 10 Amps |
| Mounting Type | Surface Mount |
| Brand | TWTADE |
| Operation Mode | Automatic |
| Coil Voltage | 3 Volts (DC) |
| Contact Current Rating | 40 Amps |
| Maximum Switching Current | 40 Amps |
| Minimum Switching Voltage | 3 Volts (DC) |
| UPC | 635648190440 |
| Manufacturer | TWTADE |
| Part Number | SSR |
| Item Weight | 5.9 ounces |
| Package Dimensions | 6.22 x 4.06 x 2.4 inches |
| Item model number | SSR |
| Is Discontinued By Manufacturer | No |
| Size | DC to DC 40A |
| Material | Copper |
| Item Package Quantity | 1 |
| Measurement System | Imperial, Metric |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Connector Type:** Screw
- **Contact Type:** Normally Open
- **Current Rating:** 10 Amps
- **Mounting Type:** Surface Mount
- **Brand:** TWTADE

## 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

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Not for florescent ballasts.
  

*by A***S on Reviewed in the United States on May 28, 2023*

Fit no problem to the inside of a light fixture, triggerd by a 15amp wireless switch. Prior switch failed within a few months, this should last forever... update. Lasted maybe a few months. Physicly burnt inside. I was using it to control about 12 amps of florescent lights it burnt out quick and stayed on. Not good. Anyway no where near 40 amps lol

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    good buy
  

*by C***S on Reviewed in the United States on February 23, 2024*

works well for my ebike. cuts power even with a small signal

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Great Product
  

*by F***K on Reviewed in the United States on December 31, 2023*

I am using these as part of an alternating sump pump controller for my basement. I wanted something that would switch quietly as the normal sump pump switch was quite noisy when it turned on and off as well as have some piece of mind knowing my pump will have a backup system. I have had similar that are in use now, but not available and have them in service now for 4.5 years. They are working better than expected.The pumps short cycle as the sump is too small. They handle the short cycle time with no issue. I use a cooling fan to blow across the heat sinks for added cooling.As other people have mentioned, it does not come with heat sink compound which is a must for these to dissipate the heat properly. I used ARCTIC MX-4 and does the job.I am using these to control 1/2 hp sump pumps.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-24*