Industrial EMI Filters

Reliable Noise Suppression & EMC Compliance

Industrial EMI Filter
--Effectively suppress electrical interference from VFD, servo, SCR

As a professional EMI filter manufacturer, DOREXS can provide high-quality EMC components and EMI solutions for different industries. Whether it is industrial manufacturing equipment, medical equipment, or new energy charging facilities, our filters can effectively suppress electromagnetic noise, harmonic interference and transient voltage fluctuations to ensure stable operation of equipment and extend service life.
In the industrial field, DOREXS excels in minimizing the EMI generated by industrial equipment such as automation systems, VFD, servo motors and power supplies. We can analyze the causes of electrical interference based on your description, and we can also perform EMC testing and analysis for your equipment to provide you with the best EMI solutions for industrial equipment.
DOREXS not only provides a wide range of standard industrial-grade EMI filters, but also designs, improves and customizes EMI solutions and power quality optimization solutions. If you can't find a suitable solution in standard products, please contact us and we will customize a solution that meets your specifications.

Industrial grade EMI filter recommendation

single phase EMI/EMC filter

Single Phase Bipolar Filter 

This series of EMI filters adopts two-stage or multi-stage design and has excellent ability to reduce electrical interference. Rated current: 1A-200A, rated voltage: 115-250VAC, operating frequency: 50/60Hz. It has more advantages than conventional single-phase power supply filters in durability, anti-interference ability, power carrying capacity and environmental adaptability. Widely used in single-phase industrial power supply systems. Passed UL, CE, IEC and other international certifications. There are a variety of installation methods to choose from. Provide customized solutions to meet the needs of different industrial applications.
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Three Phase EMI Filter 

Industrial-grade three-phase EMI filters adopt two-stage, three-stage or multi-stage designs, which can provide effective filtering effects in a wide frequency range, effectively improving the stability and reliability of equipment. Suitable for harsh industrial environments, widely used in three-phase power systems such as industrial automation equipment, servo electrical appliances, VFD, etc. Rated current: 6A-1000A, rated voltage: 380/440VAC, can be customized according to customer needs.
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three phase EMI/EMC filter
IndustrialEMI Filter --EffectivelysuppresselectricalinterferencefromVFD,servo,SCR AsaprofessionalEMIfiltermanufacturer,DOREXScanprovidehigh-qualityEMCcomponentsandEMIsolutionsfordifferentindustries.Whetheritisindustrialmanufacturingequipment,medicalequipment,ornewenergychargingfacilities,ourfilterscaneffectivelysuppresselectromagneticnoise,harmonicinterferenceandtransientvoltagefluctuationstoensurestableoperationofequipmentandextendservicelife. Intheindustrialfield,DOREXSexcelsinminimizingtheEMIgeneratedbyindustrialequipmentsuchasautomationsystems,VFD,servomotorsandpowersupplies.Wecananalyzethecausesofelectricalinterferencebasedonyourdescription,andwecanalsoperformEMCtestingandanalysisforyourequipmenttoprovideyouwiththebestEMIsolutionsforindustrialequipment. DOREXSnotonlyprovidesawid
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What is an industrial EMI filter?

An industrial EMI filter is a passive power line filtering device designed to attenuate high-frequency electromagnetic noise generated or transmitted in industrial electrical systems. These filters are installed at the power input of industrial equipment to block harmful interference, preventing it from propagating through the power lines or affecting nearby equipment.
By effectively suppressing both common-mode and differential-mode noise, industrial EMI filters protect sensitive electronic equipment, improve signal integrity, and help equipment comply with electromagnetic compatibility (EMC) standards such as IEC, EN, and CISPR.

industrial EMI filter
Why Industrial Systems Need EMI Filtering

Why Industrial Systems Need EMI Filtering

Industrial application environments are among the most challenging in terms of electromagnetic compatibility (EMC). Common sources of interference include: ✔ Variable frequency drives (VFDs) and servo motor systems
✔ Industrial power supplies and inverters
✔ PLC control cabinets and automation equipment
✔ Welding machines, cutting equipment, and high-current loads
Without proper EMI filtering, power line noise can lead to system restarts, communication errors, production downtime, or EMC test failures. Installing industrial-grade EMI filters can significantly reduce these risks and extend equipment lifespan.