---
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: "₩33520"
currency: KRW
in_stock: true
category: "Twtade"
url: https://www.desertcart.kr/products/133918338-twtade-ssr-40-dd-40a-dc-3-32v-to-dc
store_origin: KR
region: South Korea
---

# 40A max current capacity 3-32V DC input voltage range Includes efficient heat sink TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink

**Brand:** twtade
**Price:** ₩33520
**Availability:** ✅ In Stock

## Summary

> ⚡ Master your power flow with the SSR-40DD – where reliability meets control!

## 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?** ₩33520 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/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

- • **Reliable & Long-lasting:** Designed for continuous operation with minimal heat generation and high durability
- • **Stay Cool Under Pressure:** Comes with a robust heat sink to prevent overheating during extended use
- • **Wide Voltage Compatibility:** Operates seamlessly from 3V to 32V input and 5V to 60V output
- • **Precision Control for Safety:** Ideal for automated shutoff in solar and industrial systems, preventing overcharge risks
- • **Power Through with Confidence:** Handles up to 40A DC load for heavy-duty applications

## Overview

The TWTADE SSR-40 DD is a solid state relay designed for DC to DC switching, supporting up to 40 amps and input voltages from 3 to 32 volts DC, with output voltages ranging from 5 to 60 volts DC. It includes a high-quality heat sink to ensure efficient thermal management during prolonged use, making it perfect for professional-grade solar power systems and industrial automation requiring precise, reliable power control.

## Description

TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink: desertcart.com: Industrial & Scientific

## 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 | #84,958 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #18 in Solid State Relays |
| Brand Name | TWTADE |
| Coil Voltage | 3 volts_of_direct_current |
| Connector Type | Screw |
| Contact Current Rating | 40 A |
| Contact Type | Normally Open |
| Current Rating | 10 A |
| Customer Reviews | 3.9 3.9 out of 5 stars (185) |
| Manufacturer | TWTADE |
| Maximum Switching Current | 40 A |
| Minimum Switching Voltage | 3 volts_of_direct_current |
| Model | SSR |
| Mounting Type | Surface Mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| 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 A
- **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/71rNqszIojL.jpg)

## Available Options

This product comes in different **Size** options.

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**Shop now:** [https://www.desertcart.kr/products/133918338-twtade-ssr-40-dd-40a-dc-3-32v-to-dc](https://www.desertcart.kr/products/133918338-twtade-ssr-40-dd-40a-dc-3-32v-to-dc)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-10-21*