---
product_id: 80970476
title: "4-Channel DC 24V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control(24V, 4-Channel)"
brand: "knacro"
price: "€ 39.55"
currency: EUR
in_stock: true
reviews_count: 1
category: "Knacro"
url: https://www.desertcart.de/products/80970476-4-channel-dc-24v-relay-module-high-low-level-triggering
store_origin: DE
region: Germany
---

# 30A high load capacity Optocoupler isolation for noise immunity Industrial-grade PCB & 9.5mm barrier terminals 4-Channel DC 24V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control(24V, 4-Channel)

**Brand:** knacro
**Price:** € 39.55
**Availability:** ✅ In Stock

## Summary

> ⚙️ Command your automation with power and precision!

## Quick Answers

- **What is this?** 4-Channel DC 24V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control(24V, 4-Channel) by knacro
- **How much does it cost?** € 39.55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/80970476-4-channel-dc-24v-relay-module-high-low-level-triggering)

## Best For

- knacro enthusiasts

## Why This Product

- Trusted knacro brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Industrial-grade PCB and robust 9.5mm barrier terminals guarantee durability and secure connections.
- • **Flexible Triggering:** Supports both high and low-level triggers for seamless integration with diverse PLC systems.
- • **Powerhouse Performance:** Handles up to 30A at DC 30V or AC 250V for heavy-duty industrial control.
- • **Noise-Proof Reliability:** Optocoupler isolation ensures stable, interference-free operation in complex environments.
- • **Plug & Play Convenience:** Direct terminal wiring interfaces make installation quick and hassle-free.

## Overview

The KNACRO 4-Channel DC 24V Relay Module delivers industrial-grade control with a robust 30A load capacity at DC 30V or AC 250V. Featuring optocoupler isolation for superior noise immunity and flexible high/low-level triggering, it ensures reliable performance in automation and PLC systems. Built on a durable PCB with secure 9.5mm barrier terminals, this module offers easy terminal wiring for fast, stable integration in professional industrial environments.

## Description

This is a relay module with high performance, which is convenient and practical for users. Features: 4-channel, DC 24V 30A relay module. Output capacity: within DC 30V 30A or AC 250V 30A. Using optocoupler isolation, strong anti-jamming capability and stable performance. The module can be set high or low trigger. To ensure stability, uses industrial grade PCB board and 9.5mm barrier terminals. All interfaces can be connected directly via terminal wiring leads, very convenient. Trigger voltage range: High-level trigger: DC 12-24V relay on; DC 0-8.5V relay off; ---- Low-level trigger: DC 0-12V relay on; DC 13-24V relay off; Module Interface Description: 1. DC +: DC power supply positive; 2. DC -: DC power supply module negative; 3. IN: Signal input terminal(support High/Low Level switch freely); 4. Normally open (NO): Relay normally open; 5. Common terminal (COM): Relay common; 6. Normally closed terminal (NC): relay normally closed terminal; Specifications: Type: 4-Channel Relay Voltage: DC 24V Output Capacity: within DC 30V 30A or AC 250V 30A Quiescent Current: 5mA Trigger Current: 5mA Module Size: 100 * 83 * 20mm Module Weight: 172g Package List: 1 * Relay Module

Review: good and happy with it - good and happy with it

## Features

- Using high-power relay, the maximum control load DC 30V 30A / AC 250V 30A;
- Module Power Supply : DC 24V（Module supply voltage must be DC, and the voltage to be consistent with the relay voltage.）
- In line with international safety standards, the control area and the load area with isolation slot.
- Each channle has a relay on LED indication.
- To ensure stability, uses industrial grade PCB board and 9.5mm barrier terminals.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07G8S62G2 |
| Best Sellers Rank | #1,912,984 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9,066 in Power Converters |
| Brand Name | KNACRO |
| Coil Voltage | 24 Volts |
| Connector Type | Screw |
| Contact Current Rating | 30 Amps |
| Contact Material | Silver Alloy |
| Contact Type | Normally Open |
| Current Rating | 30 Amps |
| Customer Reviews | 4.6 4.6 out of 5 stars (5) |
| Included Components | no |
| Manufacturer | KNACRO |
| Maximum Switching Current | 30 Amps |
| Maximum Switching Voltage | 24 Volts |
| Model | 30A Relay Module Control Board |
| Mounting Type | PCB Mount |
| Operation Mode | Automatic |
| Part Number | 30A Relay Module Control Board |
| UPC | 724873025082 724873026478 |
| Warranty Description | 1 YEAR |

## Product Details

- **Connector Type:** Screw
- **Contact Material:** Silver Alloy
- **Contact Type:** Normally Open
- **Current Rating:** 30 Amps
- **Mounting Type:** PCB Mount

## Images

![4-Channel DC 24V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control(24V, 4-Channel) - Image 1](https://m.media-amazon.com/images/I/81vukWBaKJL.jpg)
![4-Channel DC 24V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control(24V, 4-Channel) - Image 2](https://m.media-amazon.com/images/I/818l25+AGmL.jpg)
![4-Channel DC 24V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control(24V, 4-Channel) - Image 3](https://m.media-amazon.com/images/I/816kHY5YLJL.jpg)
![4-Channel DC 24V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control(24V, 4-Channel) - Image 4](https://m.media-amazon.com/images/I/81j2Rix9EQL.jpg)
![4-Channel DC 24V Relay Module High Low Level Triggering Optocoupler Isolation Load 30A DC 30V AC 250V for PLC Automation Control, Industrial System Control(24V, 4-Channel) - Image 5](https://m.media-amazon.com/images/I/81w+pRWwIJL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ good and happy with it
*by B***A on August 24, 2019*

good and happy with it

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-04-01*