--- product_id: 60413615 title: "Noise Suppressor Power EMI Filter Termianl Single-Phase Line-Conditioner JREle AC 115/250V 20A CW4L2-20A-S" price: "€ 28.26" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.pt/products/60413615-noise-suppressor-power-emi-filter-termianl-single-phase-line-conditioner store_origin: PT region: Portugal --- # 20A rated current Dual voltage 115/250V AC Wide -25°C to +85°C operation Noise Suppressor Power EMI Filter Termianl Single-Phase Line-Conditioner JREle AC 115/250V 20A CW4L2-20A-S **Price:** € 28.26 **Availability:** ✅ In Stock ## Summary > 🔇 Silence the static, amplify your productivity! ## Quick Answers - **What is this?** Noise Suppressor Power EMI Filter Termianl Single-Phase Line-Conditioner JREle AC 115/250V 20A CW4L2-20A-S - **How much does it cost?** € 28.26 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/60413615-noise-suppressor-power-emi-filter-termianl-single-phase-line-conditioner) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual Voltage Compatibility:** Seamlessly adapts to 115V or 250V AC lines, ensuring versatile integration across setups. - • **Wide Temperature Resilience:** Operates flawlessly from -25°C to +85°C, perfect for diverse environments and critical equipment. - • **Powerful 20A Current Handling:** Supports high-demand devices with robust 20A capacity for uninterrupted performance. - • **Superior EMI Noise Suppression:** Dramatically reduces electrical interference, stabilizing sensitive electronics and extending their lifespan. - • **Ground Wire Essential for Peak Performance:** Connect the ground wire to unlock full filtering power—without it, effectiveness drops by 50%. ## Overview The JREle CW4L2-20A-S Noise Suppressor Power EMI Filter is a single-phase line conditioner designed for professional-grade 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 significantly reduces electromagnetic interference to enhance device stability and longevity. Ground connection is critical to achieve maximum filtering efficiency. ## 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. Review: Solved my problem. Your mileage may vary. - I ran power to my garden shed via a Ground Fault Circuit Interrupter/Arc Fault Circuit Interrupter (GFCI/AFCI) breaker in the load center at my house. I was having trouble with the arcing of the brushes in my compound miter saw tripping the breaker. I placed this filter between the power saw and the outlet in the shed and it stopped the tripping of the AFCI breaker. It makes sense since the purpose of the AFCI is to remove power in the event of an arcing wire connection. Apparently the internal circuitry of the AFCI breaker sees the normal arcing of motors with brushes as an arcing wire. Review: excellent suppression of interference from treadmill - 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. ## 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 | |---------------|-------| | Customer Reviews | 4.3 out of 5 stars 122 Reviews | ## 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 ### ⭐⭐⭐⭐⭐ Solved my problem. Your mileage may vary. *by W***R on July 21, 2025* I ran power to my garden shed via a Ground Fault Circuit Interrupter/Arc Fault Circuit Interrupter (GFCI/AFCI) breaker in the load center at my house. I was having trouble with the arcing of the brushes in my compound miter saw tripping the breaker. I placed this filter between the power saw and the outlet in the shed and it stopped the tripping of the AFCI breaker. It makes sense since the purpose of the AFCI is to remove power in the event of an arcing wire connection. Apparently the internal circuitry of the AFCI breaker sees the normal arcing of motors with brushes as an arcing wire. ### ⭐⭐⭐⭐⭐ 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. ### ⭐⭐⭐⭐⭐ Helped fix flickering LED lamps *by J***0 on February 26, 2024* Washing machine (direct drive Samsung) when agitating, causing some cheap Chinesium LED bulbs to flicker. Some bulbs ok, others flickered. Wired a male and female cord end onto this suppressor and fed washer through it. Reduced but didn’t completely eliminate flicker. Barely noticeable now. ## Frequently Bought Together - Noise Suppressor Power EMI Filter Termianl Single-Phase Line-Conditioner JREle AC 115/250V 20A CW4L2-20A-S - KETOTEK Single Phase Energy Meter Din Rail Electricity Usage Monitor AC 40-300V 100A Voltmeter Ammeter Watt Kwh Frequency Power Meter Built-in CT 110V - smseace Distribution Protection Box, ABS Plastic Transparent Cover Waterproof Distribution Box IP65, for Indoor Wall Circuit Breaker (5 Way) --- ## 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.pt/products/60413615-noise-suppressor-power-emi-filter-termianl-single-phase-line-conditioner](https://www.desertcart.pt/products/60413615-noise-suppressor-power-emi-filter-termianl-single-phase-line-conditioner) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-05-18*