---
product_id: 60413615
title: "Noise Suppressor Power EMI Filter Termianl Single-Phase Line-Conditioner JREle AC 115/250V 20A CW4L2-20A-S"
brand: "hnnuy"
price: "RM157"
currency: MYR
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.my/products/60413615-noise-suppressor-power-emi-filter-termianl-single-phase-line-conditioner
store_origin: MY
region: Malaysia
---

# 20A rated current Dual voltage 115/250V AC Wide -25°C to +85°C operating range Noise Suppressor Power EMI Filter Termianl Single-Phase Line-Conditioner JREle AC 115/250V 20A CW4L2-20A-S

**Brand:** hnnuy
**Price:** RM157
**Availability:** ✅ In Stock

## Summary

> 🔇 Silence the noise, amplify your equipment’s life!

## Quick Answers

- **What is this?** Noise Suppressor Power EMI Filter Termianl Single-Phase Line-Conditioner JREle AC 115/250V 20A CW4L2-20A-S by hnnuy
- **How much does it cost?** RM157 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/60413615-noise-suppressor-power-emi-filter-termianl-single-phase-line-conditioner)

## Best For

- hnnuy enthusiasts

## Why This Product

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

## Key Features

- • **Ground Wire Essential:** Maximize filter efficiency by proper grounding—don’t settle for half the protection.
- • **Dual Voltage Compatibility:** Seamlessly adapts to 115V or 250V AC systems, perfect for global or mixed setups.
- • **Wide Temperature Resilience:** Operates flawlessly from -25°C to +85°C, ensuring reliability in diverse environments.
- • **Powerful 20A Current Handling:** Supports high-demand devices with robust 20A capacity for uninterrupted performance.
- • **Precision EMI Noise Suppression:** Minimizes electromagnetic interference to stabilize your critical equipment and extend its lifespan.

## Overview

The JREle CW4L2-20A-S Noise Suppressor Power EMI Filter is a single-phase line conditioner designed to reduce electromagnetic interference in sensitive equipment. Rated for 20A current and dual voltage (115/250V AC), it operates reliably across a wide temperature range (-25°C to +85°C). Ideal for labs, medical devices, and automation systems, it enhances equipment stability and longevity when properly grounded.

## Description

No filter is guaranteed to eliminate all interference, only if the interference source on the electric path corresponds with the filter frequency, it have the best effect. In a word, adding a filter must be better than no filter. The biggest effect of the filter is to improve the stability of the equipment and prolong the service life of the equipment.

## Features

- The equipment of laboratory, Communication transmission system equipment, Uninterruptible Power Supply, Medical equipment, Servo frequency control equipment, Automation equipment,Precision machinery
- Hi-pot Test,1450VDC 2sec (L to N) ,1450VDC 2sec (L to N) ,1500VAC 2sec (L/N to G),Working Temperature 25/85/21 (-25¡ãC to +85¡ãC)
- Rated Voltage 125/250VAC,Operation Frequency 50/60Hz,Rated Current 1-20A
- Notice: The filter must be connect the ground wires ,otherwise, the effect shall be reduced by 50%.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Package Dimensions | 3.54 x 2.09 x 1.34 inches |
| Item Weight | 6.4 ounces |
| Manufacturer | JREle |
| ASIN | B073MCGBP5 |
| Item model number | CW4L2 |
| Is Discontinued By Manufacturer | No |
| Date First Available | July 1, 2017 |

## Images

![Noise Suppressor Power EMI Filter Termianl Single-Phase Line-Conditioner JREle AC 115/250V 20A CW4L2-20A-S - Image 1](https://m.media-amazon.com/images/I/61KdvMJTD6L.jpg)

## Questions & Answers

**Q: I have a refrigerator and motion sensor security light on the same circuit.  Motion sensor doesn’t like motor noise.  Will this help?**
A: It might.  But you'll need to put the EMI filter in a line that connects ONLY to the motion sensor, for example in the same electric box as the sensor.  In other words, the wiring should look like: sensor-EMIfilter-wire-frige-wire-circuitbreaker.  Thus noise added by the fridge will not get past the EMI filter.

**Q: Any ideas on how to insulate the terminals?**
A: You can use small insulator boots like these on Amazon.  https://www.amazon.com/Allstar-Performance-ALL76154-Black-Terminal/dp/B009Q7AANK/ref=asc_df_B009Q7AANK/?tag=hyprod-20&linkCode=df0&hvadid=312454010291&hvpos=1o3&hvnetw=g&hvrand=12559790285548839803&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9030392&hvtargid=pla-568638316790&psc=1&tag=&ref=&adgrpid=61179236814&hvpone=&hvptwo=&hvadid=312454010291&hvpos=1o3&hvnetw=g&hvrand=12559790285548839803&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9030392&hvtargid=pla-568638316790

**Q: I know where my emi noise is coming from.  how do i block out noise at its source?  this appears to block out noise at the target (load).**
A: I have used two of these, one at the source of EMI, one at the device affected by the EMI. One was put on a noisy fluorescent ceiling fixture and it stopped TV interference in another room.  Another was put on a microwave oven and it blocked noise coming  from the microwave oven from nuisance tripping a combined GFCI/AFCI breaker. Solved my problem in both cases.
I noticed that the metal case did not NOT seem to me to be suitable for a GROUNDING connection. The metal case is connected through capacitors to the internal current carrying circuit.  
I installed mine inside closed, insulated plastic boxes so the metal case was not exposed.  This is something to be installed by an electrician based on consideration of the particular application and installation conditions.

**Q: How to grounded this device at the output?**
A: The case is RF ground .There is a 6-42 machine screw and nut on one side that is mounted to the case and used for a ground connection.

## Customer Reviews

### ⭐⭐⭐⭐⭐ excellent suppression of interference from treadmill
*by D***I on January 10, 2023*

Every time the treadmill in our house was in use, broad-spectrum severe interference was generated that made radio reception difficult. I am a ham radio operator and radio listener and it was enough to be a show-stopper under some circumstances. The treadmill in question is a NordicTrack 2150, but the manufacturer sells these (or some variant) under many brand names. I installed this EMI filter and the problem has disappeared, with spurs now below the random noise level. Quantitatively, I'd estimate at least a 40-50dB sort of improvement on low-frequency and mid-frequency bands (e.g. AM radio).Installation was not terribly difficult.(EDIT: Modify your equipment at your own risk. I make no representations regarding the safety, or effect on agency approvals, of this modification.)Release the strain relief from the treadmill frame, then unlatch it from the existing power cable. Then re-latch the strain relief closer to the plug, so that when reinserted in the frame, there will be enough slack cable inside the frame. Find a suitable mounting spot for the filter first, so you'll know if you have enough slack. I drilled two 1/8" holes in the frame of the treadmill and used self-tapping sheet-metal screws. Then cut the cable and remove the outer jacket from both cut ends. Strip the ends of the conductors and crimp on ring terminals and you're done. Make sure that you connect the green wire of the power cord and the green wire from the treadmill frame to the ground terminal of the filter.

### ⭐⭐⭐⭐⭐ Works great to prevent tripping AFCI/GFCI breaker by microwave oven
*by D***E on March 26, 2021*

My new microwave tripped the AFCI/GFCI only when a small item (one cup of water) was being heated.Added this filter inside a box between the outlet and the microwave, and that fixed the problem.Have had previous good experience putting one of these in a fluorescent light ceiling fixture that was interfering with TV reception. Also worked great.

### ⭐⭐⭐⭐ Pretty good
*by S***M on November 26, 2022*

Got this for my tube guitar amp hoping to reduce some of the high frequency electrical noise. The quality looks good and it was easy to use. I didn't really hear any difference with or without the filter but it was worth a shot.

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-22*