LXLZ Note: This Product Provides Solutions for Parameter Customization And Application.
Single Phase EMI Filter Wire Leads AC Power Noise Filter
The CW4L2-R Series Single Phase AC Power Line EMI Filter is a professional-grade electromagnetic interference suppression component engineered for industrial and commercial power systems. Manufactured by LXLZ (Shenzhen Lize Electronics), this filter combines a dual-stage π-type filter circuit, nickel-plated metal enclosure, and gold-plated terminal block connections to deliver reliable, long-lasting EMI and RFI noise attenuation in demanding operating environments.
Rated for 115VAC and 250VAC dual voltage, compatible with 50Hz and 60Hz power grids, and available in current ratings from 1A to 30A, the CW4L2-R series provides a single-source solution for procurement teams, system integrators, and OEM manufacturers requiring consistent, certified EMI filtering across a wide range of applications.
All units carry CE and RoHS certification and are 100% electrically tested prior to shipment.
Table of Contents
Specifications
| Parameter | Details |
|---|---|
| Model Series | CW4L2-R |
| Phase | Single Phase |
| Rated Voltage | 115VAC / 250VAC |
| Frequency | 50Hz / 60Hz |
| Current Rating | 1A / 3A / 6A / 10A / 16A / 20A / 30A |
| Connection Type | Terminal Block — Wire Lead (LINE / LOAD) |
| Housing | Nickel-Plated Steel Shell |
| Terminal Material | Gold-Plated Copper Terminal |
| Terminal Protection | Transparent Protective Cover |
| Mounting | Panel Mount — Screw Flange (Mounting Ears) |
| Filter Topology | Dual-Stage π-Type Circuit |
| CX Capacitor | 3 × 0.1μF |
| CY Capacitor | 2 × 3300pF |
| Inductance | 4 × 0.5mH |
| Bleed Resistor | 1MΩ / 1/2W |
| Certification | CE / RoHS |
📄 Full dimensional drawings, insertion loss curves, and test reports available upon request.
Circuit & Internal Component Details
Based on the label schematic, the CW4L2-R employs a dual-stage LC π-type filter topology with the following component configuration:
Capacitor Network
- CX (X-Class Capacitors): 3 × 0.1μF Differential-mode capacitors connected line-to-line, suppressing differential-mode noise generated by switching loads
- CY (Y-Class Capacitors): 2 × 3300pF Common-mode capacitors connected line-to-earth and neutral-to-earth, providing a low-impedance path to ground for common-mode interference
Inductor Network
- L: 4 × 0.5mH Common-Mode Choke Inductors Wound on high-permeability toroidal cores, providing high impedance to common-mode noise while maintaining low impedance to the fundamental power frequency — minimizing voltage drop and power loss
Bleed Resistor
- R: 1MΩ / 0.5W Discharge resistor across X-capacitors, ensuring safe dissipation of stored charge after power disconnection — a critical safety feature for equipment compliance
This circuit architecture ensures effective attenuation of both common-mode and differential-mode conducted EMI across the frequency range specified in CISPR 22 / EN 55022 Class B standards.
Product Features
Nickel-Plated Steel Enclosure
The fully enclosed nickel-plated steel housing provides:
- High electromagnetic shielding effectiveness
- Superior corrosion and oxidation resistance
- Robust mechanical protection for internal components
- Consistent grounding contact surface for chassis bonding
Gold-Plated Terminal Block with Transparent Cover
- Gold-plated copper terminals ensure low contact resistance, minimal oxidation, and long-term connection reliability — critical in high-current or high-vibration environments
- Transparent protective terminal covers shield live connections from accidental contact and contamination, meeting industrial safety requirements
- Clear LINE and LOAD labeling on both terminal blocks eliminates wiring error during installation
Dual Voltage Rating: 115V / 250VAC
Compatible with both North American (115VAC / 60Hz) and international (220–250VAC / 50Hz) power standards. A single product variant supports global deployment, simplifying inventory management for international OEM programs.
Panel Mount with Integrated Mounting Flanges
The bottom-mounted screw flange ears allow secure, vibration-resistant installation directly onto DIN rail panels, equipment chassis, or electrical enclosure base plates — no additional mounting bracket required.
Compact, High-Density Form Factor
Designed for space-constrained panel and enclosure installations. The compact body accommodates a full dual-stage filter circuit without sacrificing performance, making it suitable for integration into equipment where internal space is limited.
Applications
The CW4L2-R Series is specified across a broad range of professional and industrial applications:
Industrial Automation & Motion Control
- CNC machining centers and milling machines
- Servo motor drives and variable frequency drives (VFDs)
- Programmable logic controllers (PLCs) and HMI systems
- Robotic arms and automated assembly systems
Power Electronics & Energy Systems
- Industrial switching power supplies
- UPS (Uninterruptible Power Supply) systems
- DC-DC converter input stages
- Solar inverters and energy storage system interfaces
Medical & Laboratory Equipment
- Diagnostic imaging and ultrasound systems
- Patient monitoring and life-support equipment
- Precision laboratory instruments and analytical devices
Telecommunications & Network Infrastructure
- Base transceiver station (BTS) equipment
- Communication rack power distribution
- Network switching and routing infrastructure
Test & Measurement
- Signal analyzers and spectrum analyzers
- Automated test equipment (ATE)
- Precision power analyzers requiring clean AC input
HVAC & Building Automation
- Smart building management control panels
- Variable speed HVAC drive systems
- Lighting control and dimmer systems
Railway & Transportation
- On-board power conditioning units
- Trackside control and signaling equipment
- EV charging station power input filtering