---
product_id: 373929902
title: "3pcs 20A 300W CC CV Step Down Module Adjustable DC 6-40V to 1.2-36V Voltage Regulator Buck Converter Constant Current Power Supply Module"
brand: "aceirmc"
price: "6156 kr"
currency: ISK
in_stock: true
reviews_count: 13
category: "Aceirmc"
url: https://www.desertcart.is/products/373929902-3pcs-20a-300w-cc-cv-step-down-module-adjustable-dc
store_origin: IS
region: Iceland
---

# 20A max output current 6-40V wide input voltage 1.2-36V adjustable output voltage 3pcs 20A 300W CC CV Step Down Module Adjustable DC 6-40V to 1.2-36V Voltage Regulator Buck Converter Constant Current Power Supply Module

**Brand:** aceirmc
**Price:** 6156 kr
**Availability:** ✅ In Stock

## Summary

> 🎯 Buck the limits, power your innovation!

## Quick Answers

- **What is this?** 3pcs 20A 300W CC CV Step Down Module Adjustable DC 6-40V to 1.2-36V Voltage Regulator Buck Converter Constant Current Power Supply Module by aceirmc
- **How much does it cost?** 6156 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/373929902-3pcs-20a-300w-cc-cv-step-down-module-adjustable-dc)

## Best For

- aceirmc enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Robust 75V/80A dual MOSFET design with low ripple and stable output for professional-grade reliability.
- • **Efficiency Champion:** Up to 95% efficiency ensures minimal energy loss and cooler operation.
- • **User-Friendly Setup:** Large 30A screw terminals and dual heatsinks make installation and heat management a breeze.
- • **Voltage Flexibility:** Seamlessly steps down from 6-40V input to a finely tunable 1.2-36V output.
- • **Powerhouse Precision:** Delivers up to 300W with 20A max current for your high-demand projects.

## Overview

The ACEIRMC 3pcs 20A 300W Buck Converter Kit offers a versatile, high-efficiency DC-DC step-down solution with a wide 6-40V input range and adjustable 1.2-36V output. Designed with heavy-duty dual MOSFETs and low ripple capacitors, it delivers stable power up to 300W with self-recovery short circuit protection. Ideal for DIY electronics, solar setups, LED drivers, and industrial applications, this compact module combines precision, durability, and ease of installation for millennial professionals pushing the boundaries of their projects.

## Description

Features: With a wide input voltage range from 6V to 40V, the step-down converter can accurately adjust output voltage and current. The efficiency can be up to 96%, measured at 20A, converting 24V to 12V. It is designed with 75V/80A large current dual MOS tube. Input and output use high frequency low resistance electrolytic capacitor, low ripple, stable output. Wiring is convenient with these large current 30A screw terminals. The buck module has 2 heat sink that could enhance heat dissipation. When there is a big difference between input and output voltage, please decrease power and current.Specifications: Input Voltage: 6V to 40V DC(10V to 40V is suggested) Output Voltage: 1.2V to 36V DC Output Current: 20A(max.), 15A(suggested) Efficiency: 95%(24V to 12V, 20A) Output Ripple: ≤50mV Wiring Method: Terminal Short Circuit Protection: Self-recovery(cannot short circuit for long time) Size: 60 x 53 x 27mm / 2.36 x 2.08 x 1.06" VO+: Output positiveVO-: Output negative+IN: Input positive -IN: Input negativeCV: Output voltage adjustmentCC: Output current adjustmentEN: Enable, low voltage level shut off output; suspension, high voltage level is effectiveWhen input and output is common grounded, no-load CV output constant voltage,CC output constant currentPackage includes: 3 * 20A 300W DC DC Buck Converter

Review: As advertised! Wonderful! - I needed this item to buck 7.2V to 5V to power a 2m length of RGB led, and power an Arduino Mega 2560. It has performed admirably. The heatsinks make enclosing a bit of a pain, but I have absolutely nothing to complain about! This is about as beefy a DC-DC converter you can get for its size; able to handle 20 amps (didnt test myself). While 12$ wasn't great, I would not hesitate to get this part again for any high current, low voltage projects in the future.
Review: Worked for my application - Switched my solar setup from 12 to 24v. Now using this device to go from 24v back to 12v so I can run my laptop on my favorite little inverter, saving my larger 24v inverter for high-draw devices only. Make sure you measure your output voltage before hooking anything up to it. I got sloppy and blew up my inverter the first time (I think I had it set to like 50v, whoops), but luckily it was simple to replace the capacitor inside that blew up, and once I adjusted the voltage correctly, everything works.

## Features

- Aceirmc buck converter input voltage range is DC 6-40V, adjustable output voltage range is DC 1.2-36V, can be used to convert 24v to 12v 5v, adjustable output current range is 0-20A, max output power is 300W. The step down regulator can apply to constant output current.
- With a wide input voltage range from 6V to 40V, the step-down converter can accurately adjust output voltage and current. The efficiency can be up to 95%,(measured at 20A, converting 24V to 12V).
- Short Circuit Protection: Self-recovery(cannot short circuit for long time). Plus, when input and output is common grounded, no-load CV output constant voltage,CC output constant current
- Adopting 75V / 80A large current dual MOS tube designed step-down board, Input and output use high frequency low resistance electrolytic capacitor, low ripple, and gives a stable output. Large current 30A connection screw terminals, more convenient to install
- Application: DIY stabilized voltage supply, LED car display, mobile power, industrial equipment appliances, LED driver, monitor, solar energy, fans, photovoltaic energy, motor, etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B099S2VQ2Q |
| Best Sellers Rank | #268,375 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,124 in Power Converters |
| Customer Reviews | 3.9 3.9 out of 5 stars (161) |
| Date First Available | November 27, 2019 |
| Item Weight | 8.4 ounces |
| Item model number | ad2ff21b-26ee-4eec-894a-09d4d1e884c9 |
| Manufacturer | ACEIRMC |
| Product Dimensions | 1.06 x 2.09 x 1.06 inches |
| UPC | 701715479142 |

## Product Details

- **Brand:** ACEIRMC
- **Current Rating:** 15 Amps, 20 Amps
- **Mounting Type:** PCB Mount
- **Power Source:** Dc Power Supply
- **Product Dimensions:** 1.06"D x 2.09"W x 1.06"H

## Images

![3pcs 20A 300W CC CV Step Down Module Adjustable DC 6-40V to 1.2-36V Voltage Regulator Buck Converter Constant Current Power Supply Module - Image 1](https://m.media-amazon.com/images/I/71UO0FdEJ4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ As advertised! Wonderful!
*by C***Y on September 14, 2020*

I needed this item to buck 7.2V to 5V to power a 2m length of RGB led, and power an Arduino Mega 2560. It has performed admirably. The heatsinks make enclosing a bit of a pain, but I have absolutely nothing to complain about! This is about as beefy a DC-DC converter you can get for its size; able to handle 20 amps (didnt test myself). While 12$ wasn't great, I would not hesitate to get this part again for any high current, low voltage projects in the future.

### ⭐⭐⭐⭐⭐ Worked for my application
*by G***1 on June 3, 2021*

Switched my solar setup from 12 to 24v. Now using this device to go from 24v back to 12v so I can run my laptop on my favorite little inverter, saving my larger 24v inverter for high-draw devices only. Make sure you measure your output voltage before hooking anything up to it. I got sloppy and blew up my inverter the first time (I think I had it set to like 50v, whoops), but luckily it was simple to replace the capacitor inside that blew up, and once I adjusted the voltage correctly, everything works.

### ⭐ Shorted out.
*by J***. on October 25, 2024*

As soon as I hooked it up it started smoking.

## Frequently Bought Together

- ACEIRMC 3pcs 20A 300W CC CV Step Down Module Adjustable DC 6-40V to 1.2-36V Voltage Regulator Buck Converter Constant Current Power Supply Module
- Diymore 2pcs 20A 300W CC CV Step Down Module Adjustable DC 6-40V to 1.2-36V Voltage Regulator Buck Converter Constant Current Power Supply Module 20v to 12v Step Down

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-01-25*