---
product_id: 28665957
title: "Uxcell AC 115/250V 20A CW4L2-20A-S Noise Suppressor Power EMI Filter"
brand: "uxcell"
price: "R668"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Uxcell"
url: https://www.desertcart.co.za/products/28665957-uxcell-ac-115-250v-20a-cw4l2-20a-s-noise-suppressor
store_origin: ZA
region: South Africa
---

# 20A rated current EMI noise suppression Compact 6x5.5x3cm metal build Uxcell AC 115/250V 20A CW4L2-20A-S Noise Suppressor Power EMI Filter

**Brand:** uxcell
**Price:** R668
**Availability:** ✅ In Stock

## Summary

> 🔇 Power your projects with silence and confidence!

## Quick Answers

- **What is this?** Uxcell AC 115/250V 20A CW4L2-20A-S Noise Suppressor Power EMI Filter by uxcell
- **How much does it cost?** R668 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/28665957-uxcell-ac-115-250v-20a-cw4l2-20a-s-noise-suppressor)

## Best For

- uxcell enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Robust:** Durable metal casing in a sleek silver-black finish fits seamlessly into tight setups.
- • **Silence the Static:** Advanced EMI filtering technology drastically reduces electrical noise and interference.
- • **Trusted by Makers & Pros:** Highly rated for CNC and Arduino projects, eliminating random resets and background noise.
- • **Plug & Play Peace of Mind:** Easy installation with standard 7.5cm hole spacing—get your projects noise-free fast.
- • **Power Through Without Interference:** Rated for 20A at 115/250V AC, ensuring stable current flow for your sensitive electronics.

## Overview

The Uxcell CW4L2-20A-S Noise Suppressor Power EMI Filter is a compact, metal-encased device designed to reduce electromagnetic interference on AC power lines rated at 115/250V and 20A. Ideal for small electronics and precision instruments, it ensures stable operation by minimizing noise that can cause resets or performance issues, making it a trusted choice for professionals and hobbyists alike.

## Description

General purpose single phase AC power line filters, easy to install. Available for small electronic equipment's and measuring in instrument.

Review: Clean power - Cleaned up the 120 volt input to my Arduino project. No more random resets and code lockups. The ground lug which must be grounded is very close to the hot power terminals. Beware of shorting out the unit. Will buy again for future Arduino projects.
Review: CNC Noise filter - Connected to a CNC to reduce noise and it seems to work. Based on real world use I would buy this again. Before had some background noise that limited speed - just a little - but still this appears to solve a nagging issue.

## Features

- Product Name : AC Power Line EMI Filter;Model No. : CW4L2-20A-S
- Working Voltage : AC 115/250V, 50/60Hz;Rated Current : 20A
- Installing Hole Size(Approx) : Distance: 7.5cm / 3"Diameter: 5mm/0.2";Size(Approx) : 6 x 5.5 x 3cm / 2.4" x 2.2" x 1.2"(L* W*H)
- External Material : Metal;Color : Silver Tone, Black
- Net Weight : 176g;Package Content : 1 x AC Power Line EMI Filter

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B016EJ5DU2 |
| Best Sellers Rank | #54,726 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9 in Electromagnetic Interference Filters |
| Date First Available | October 10, 2015 |
| Item Weight | 4.8 ounces |
| Item model number | a15060800ux0454 |
| Manufacturer | Uxcell |
| Package Dimensions | 5.24 x 4.25 x 1.73 inches |

## Images

![Uxcell AC 115/250V 20A CW4L2-20A-S Noise Suppressor Power EMI Filter - Image 1](https://m.media-amazon.com/images/I/6164UlhpJ7L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Clean power
*by R***. on December 11, 2025*

Cleaned up the 120 volt input to my Arduino project. No more random resets and code lockups. The ground lug which must be grounded is very close to the hot power terminals. Beware of shorting out the unit. Will buy again for future Arduino projects.

### ⭐⭐⭐⭐⭐ CNC Noise filter
*by C***K on November 22, 2025*

Connected to a CNC to reduce noise and it seems to work. Based on real world use I would buy this again. Before had some background noise that limited speed - just a little - but still this appears to solve a nagging issue.

### ⭐⭐⭐⭐⭐ Kills that pesky RFI
*by C***S on October 18, 2022*

This works great. Had a lot of RFI from an inverter generator interfering with my radio equipment. This fixed it. It does need to be grounded to work effectively though.

## Frequently Bought Together

- Uxcell AC 115/250V 20A CW4L2-20A-S Noise Suppressor Power EMI Filter
- Tamicy 60 Pieces Clip-on Ferrite Ring Core RFI EMI Noise Suppressor Cable Clip for 3mm/ 5mm/ 7mm/ 9mm/ 13mm Diameter/Video Cable Power Cord (Black)
- 20Pcs Clip-on Ferrite Ring Core RFI EMI Noise Suppressor Cable Clip for 3mm/ 5mm/ 7mm/ 9mm/ 13mm Diameter Cable, Black

---

## 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.co.za/products/28665957-uxcell-ac-115-250v-20a-cw4l2-20a-s-noise-suppressor](https://www.desertcart.co.za/products/28665957-uxcell-ac-115-250v-20a-cw4l2-20a-s-noise-suppressor)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-18*