EMC power line filter
Model No: single phase emc filter

Single Phase EMC Filter for Industrial Equipment & Conducted EMI Suppression

High Performance Single Phase EMC Power Filter Manufacturer

✔ Rated current range from 1A–300A
✔ 110VAC / 250VAC / custom voltage options
✔ Excellent common mode and differential mode attenuation
✔ Compact metal housing design
✔ Low leakage current versions available
✔ OEM and custom EMC filter solutions
✔ UL、CE and RoHS compliant
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DOREXS single phase EMC filters are designed for effective suppression of conducted electromagnetic interference in industrial power systems and electronic equipment. These EMC power line filters help reduce unwanted electrical noise, improve system stability, and support compliance with international EMC standards.
Our single phase EMI filters are widely used in industrial automation equipment, servo drive systems, VFD applications, switching power supplies, medical devices, renewable energy systems, and communication equipment.

Key Features

Designed for Reliable EMC Performance

  • Excellent Conducted EMI Suppression

Optimized attenuation performance effectively suppresses both common mode and differential mode noise.

  • Wide Current Range

Available from low current designs to high current industrial solutions.

  • Compact Mechanical Structure

Designed for space-constrained electrical cabinets and industrial equipment.

  • Low Leakage Current Options

Suitable for sensitive systems and special EMC applications.

  • Custom Design Capability

Supports custom current ratings, leakage requirements, mounting methods, and attenuation characteristics.

  • Long Service Life

Industrial-grade components ensure reliable operation under harsh environments.

Technical Specifications

Parameter

Specification

Product Type：Single Phase EMC Filter
Rated Current：1A-300A
Rated Voltage：110 / 250VAC
Operating Frequency：50 / 60Hz
Leakage Current：Optional Low Leakage
Test Voltage (L-L)：1500VDC
Test Voltage (L-G):2250VDC
Operating Temperature：-25°C to +85°C
Housing Material：Nickel-plated iron casing
Installation Type：Panel Mount / Screw Mount
Compliance：UL/CE / RoHS
Custom specifications are available according to customer requirements.
 
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Product Pictures

Detail Picture

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Overall Dimension（±1mm)

 
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DAP1 Dimensional DrawingDBA3 Dimensional DrawingDBI5 Dimensional Drawing
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Circuit Diagram

  
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EMC Performance & Insertion Loss

Stable Attenuation Across Wide Frequency Ranges
DOREXS single phase EMC filters are optimized for both common mode and differential mode attenuation.
Performance advantages include:
  • Reduced conducted emissions
  • Improved power quality
  • Lower switching noise propagation
  • Better EMC test margins
  • Enhanced system stability
Insertion loss performance can be customized according to application requirements.
 
DEA4 single phase emc filter Insertion Loss

Mechanical Structure & Installation

Compact Installation Design
Our single phase power line filters are designed for easy integration into industrial equipment.
Available options include:
  • Screw terminal connection
  • Fast-on terminal
  • Wire lead connection
  • DIN rail installation
  • Panel mounting
Custom mechanical dimensions are supported.

Custom EMC Filter Solutions

OEM & ODM EMC Filter Manufacturer
DOREXS provides custom EMC filter solutions based on customer electrical requirements.
Customization options include:
  1. Custom current ratings
  2. Special voltage designs
  3. Low leakage structures
  4. Modified attenuation curves
  5. Terminal customization
  6. Mounting customization
  7. High temperature versions
  8. Compact size optimization
Our engineering team works directly with equipment manufacturers to optimize EMC performance and accelerate certification.
 

Certifications & Compliance

International EMC Compliance Support
DOREXS single phase EMC filters are manufactured under strict quality control procedures.
Supported compliance requirements include:
  • UL Compliance
  • CE Compliance
  • RoHS Compliance
  • EMC Design Requirements
  • Industrial Safety Standards
  • ISO Quality Manufacturing Process
Approvals and Compliances 
Our engineering team can support EMC optimization during product development.

Typical Applications of Single Phase EMC Filters

Single phase EMC filters are widely used across multiple industries and applications.

  • Industrial Automation Equipment

Used in PLC systems, control panels, factory automation systems, and electrical cabinets.

  • EMI Filter for Servo Drives

Servo systems generate significant switching noise that may affect encoder feedback and communication systems. Single phase EMI filters help improve signal stability.
  • EMI Filter for VFD Systems
Variable frequency drives generate conducted interference due to PWM switching. Proper filtering reduces EMC problems and improves compliance.
  • Switching Power Supplies
Reduce switching noise generated by power conversion circuits.

  • Medical Equipment

Low leakage current versions are available for sensitive medical applications.

  • Renewable Energy Systems

Used in energy storage systems, solar equipment, and power conversion devices.

  • Communication Equipment

Improve power quality and reduce conducted disturbances.

  • CNC Machines and Robotics

Enhance equipment reliability under high-noise environments.
 
 
Typical Applications of Single Phase EMC Filters

Need a Custom Single Phase EMC Filter Solution?

Reduce conducted EMI, improve EMC compliance, and optimize your equipment performance with DOREXS engineering support.
 

FAQ

Who are we?

DOREXS was founded in 2008 and is a manufacturer focusing on EMI solutions and power quality solutions with rich industry experience. Professional R&D technical team and advanced production equipment support us to provide cost-effective products and solutions.

How do we ensure product quality?

Our filter products have UL, CE, ISO9001 and ROHS certifications, and each product will be subject to final inspection before leaving the factory.

Can DOREXS provide customized EMI filters?

Yes. DOREXS supports custom EMI filter design based on electrical requirements, installation methods, and EMC targets.

What services can we provide?

Delivery terms: FOB, CFR, CIF, EXW, FCA
Payment currency: USD, EUR, RMB
Payment method: T/T, L/C, MoneyGram, Western Union, Cash

What products can I buy from you?

EMI/EMC filters, transformers, reactors, insulated wires and power sockets, etc.

What is a Single Phase EMC Filter?

A single phase EMC filter is an electrical noise suppression component designed to reduce conducted electromagnetic interference generated by electronic systems connected to AC power lines. These filters are installed between the power source and equipment to minimize unwanted emissions and protect sensitive devices from incoming noise.
Modern industrial equipment often generates high-frequency switching noise due to the widespread use of inverters, servo systems, switching power supplies, and variable frequency drives. Without proper conducted EMI suppression, electrical noise may propagate through the power network and cause EMC failures, communication instability, equipment malfunction, or interference with nearby devices.
DOREXS single phase EMC filters combine optimized common mode chokes, X capacitors, Y capacitors, and high-performance filtering structures to provide reliable attenuation across a broad frequency range.
As a professional EMC filter manufacturer, DOREXS supports both standard and custom solutions for global OEM customers, system integrators, and industrial equipment manufacturers.

Why Use a Single Phase EMC Filter?

Single phase power systems are commonly used in industrial and commercial equipment. However, increasing switching frequencies and compact electronic designs have made electromagnetic compatibility more challenging.
Using a properly selected single phase noise filter provides several advantages:
  1. Reduce conducted emissions on power lines
  2. Improve EMC compliance performance
  3. Protect sensitive electronic circuits
  4. Minimize interference between equipment
  5. Improve operational stability
  6. Reduce system debugging time
  7. Simplify EMC certification processes
Single phase EMC filters are especially important for equipment requiring compliance with CE EMC directives, FCC requirements, or industrial EMC standards.

What is the difference between an EMI filter and an EMC filter?

EMI filters mainly suppress electromagnetic interference, while EMC filters focus on improving electromagnetic compatibility performance. In industrial applications, these terms are often used interchangeably.

How do I select the correct single phase EMC filter?

Selection depends on:
  • Current rating
  • Voltage level
  • Noise frequency range
  • Leakage current requirements
  • Installation environment
  • EMC target standards