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EMC / EMI POWER LINE FILTERS

High-Performance Power Filters to Suppress Electromagnetic Interference (EMI)

EMI Power Line Filters

EMI Power Line Filters to Suppress

Conducted Electromagnetic Interference

Our EMI Power Line Filters are passive electronic devices specifically designed to suppress conducted electromagnetic interference (EMI) and radio frequency interference (RFI) on power and signal lines. These filters effectively reduce electrical noise generated both by your equipment and external sources, ensuring your devices operate smoothly and reliably.

If you experience issues such as telephone interference, flickering computer monitors, data network reliability problems, instrumentation errors, or malfunctioning electronics, it’s likely caused by EMI or RFI in your electrical environment. Maintaining electromagnetic compatibility (EMC) is essential not only for regulatory compliance but also to guarantee optimal device performance in environments with high electromagnetic noise.

What is Electromagnetic Interference (EMI)?

EMI refers to unwanted electromagnetic emissions or disturbances from electronic devices or natural phenomena that disrupt the operation of nearby electronics. This interference can affect digital, analogue, and communication equipment, leading to errors, signal degradation, or even complete system failures. EMI can originate from both man-made and natural sources and typically spans frequencies from 10 kHz to 10 GHz.

Why Use EMI Filters?

Our EMI filters protect sensitive electronic equipment from damaging electromagnetic radiation and minimize interference, ensuring stable, mission-critical operations. These filters are vital for maintaining signal quality and preventing permanent equipment damage.

Types of EMI Noise

EMI noise consists of two main components:

  • Common Mode Noise: Occurs simultaneously on multiple conductors in the same direction from source to receiver.
  • Differential Mode Noise: Travels in opposite directions on the conductor and its return path, forming a complete circuit of interference.

Our EMI power filters are engineered to eliminate these unwanted electrical noises effectively, safeguarding your systems and improving overall performance.

Comprehensive Range of EMI Power Filters for Single and Three-Phase Applications

We offer a wide selection of high-performance EMI power filters designed to meet the demands of both single-phase (phase-to-neutral or phase-to-phase) and three-phase (3-wire or 4-wire) power systems. Our filters are engineered to effectively suppress electromagnetic interference, ensuring stable, reliable operation of your electrical and electronic equipment across a variety of industrial and commercial environments.

Whether you need compact filters for sensitive single-phase devices or robust, heavy-duty solutions for three-phase installations, we provide products that deliver exceptional attenuation, compliance with international standards, and long-term durability.

For personalised guidance or to discuss your specific application requirements, please contact our expert support team on 01323 811100, or complete our online enquiry form. We’ll help you identify the ideal EMI filter solution for your system.

Typical Applications

  • Machinery and automation systems
  • Manufacturing plants
  • Data centers and communication hubs
  • Medical or scientific equipment
  • Power distribution and control panels

Key Benefits

  • Robust noise suppression for large electrical loads
  • Enhanced reliability under continuous operation
  • Protection for mission-critical systems and sensitive electronics
  • Minimises downtime and equipment damage

Specifications:

Rated Current (A)
1A, 3A, 6A, 10A, 12A, 16A, 20A, 25A 30A
Filter Circuit Types
Single Stage, Two Stage
Connection Types
Faston (Spade terminal), Studs (M4 srews)
Phases
Single Phase, 3 Phase
Filter Performance
General Attenuation (good reduction in noise).
High Differential & Common Mode Attenuation.
High Differential Mode Attenuation.
Very High Differential & Common Mode Attenuation.
Application Types
Building Automations.
Consumer Goods.
Datacom Equipment.
Drives and Controls.
Elevators and Cranes.
Machinery.
Noisy Requiring High Filter Perfomance.
Office Equipment.
Power and Energy.
Process Automation.
Our Address
Unit 9 Harvington Business Park, Brampton Rd, Eastbourne, BN22 9BN, UK
Need Help?
We aim to reply to email enquiries within 20 minutes (during normal working hours).
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CD Automation UK Limited © Copyright 2026. All Rights Reserved.

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