EMC Filters

Reliable EMC Filters for Industrial Power Quality

In today’s industrial environments, ensuring clean and stable electrical power is essential for maintaining uptime and protecting sensitive equipment. Murrelektronik's EMC filters are designed to suppress unwanted electromagnetic interference (EMI) and maintain power integrity across a wide range of control cabinet applications. Whether you’re operating high-speed automation systems, servo drives, or power supplies, effective EMI filtering plays a key role in equipment longevity and system reliability.

What Do EMC Filters Do?

EMC (Electromagnetic Compatibility) filters eliminate conducted interference that travels along power lines. These filters combine inductors and capacitors to attenuate both differential and common mode noise. By reducing high-frequency interference and harmonics, they help prevent malfunctions, data loss, or premature wear in electronic devices. Murrelektronik’s power entry filters are placed at the input of electrical systems to block disturbances coming from the grid as well as suppress emissions that could affect other equipment.

Filter Designs to Match Your Application

Depending on your noise environment and compliance needs, Murrelektronik offers various EMC filter configurations:

• Single-stage filters: Ideal for low to moderate EMI suppression needs in standard applications.
• Two-stage filters: Designed for more demanding environments with high-frequency interference or proximity to other sensitive electronics.

Our product range includes filters for both single-phase and three-phase systems, allowing tailored integration into your power distribution setup. Choose from DIN-rail mount options for compact installation or screw-mount filters for robust back-panel deployment in control cabinets.

Regulatory Compliance and Standards

Murrelektronik’s EMC filters are developed in accordance with international EMC standards, such as EN 55011 / CISPR 11, ensuring compliance in industrial, scientific, and medical equipment. These filters support CE certification requirements and help you meet guidelines for conducted emissions and electromagnetic tolerance in global markets.

Where Are EMC Filters Used?

The use of EMC filters is critical in a wide range of industrial and commercial settings, including:

• Control cabinets in manufacturing automation
• Frequency converters and variable speed drives
• Switch-mode power supplies to reduce EMI at the source
• Linear power supplies for stable DC voltage delivery
• Motor controllers to prevent degradation from electrical noise
• Servo drives and motion systems requiring precise signal integrity

Choosing the Right EMC Filter

Several criteria should be considered when selecting the ideal filter for your system:

• Rated current: Ensure the filter handles the maximum load current of your device.
• Phase configuration: Select filters for 1-phase or 3-phase power systems as needed.
• Number of stages: Choose one or two stages depending on the required attenuation level.
• Network type: Match the filter to your specific grounding or earthing scheme.

Whether your priority is high EMI attenuation or compact form factor, Murrelektronik provides EMC filtering solutions engineered for real-world industrial demands.

Your Trusted Partner for EMC Compliance

Murrelektronik stands for innovation and reliability in control cabinet components. Our wide range of EMC filters helps you achieve EMC compliance, reduce system noise, and protect sensitive electronics in the field. Explore our portfolio to find the right filter for your installation—backed by robust certifications and proven field performance.

Benefit from:

• Space-saving DIN-rail or screw-mount installation
• High performance under industrial temperature ranges
• Variants with low leakage current for medical or IT environments
• Short lead times and trusted Murrelektronik quality

Optimize your power system with EMC filters from Murrelektronik—built for demanding environments and engineered for compliance.