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FIN21.003.M Single Phase EMI Filter

The single phase FIN21.003.M EMI-RFI filters are used to bring electrical and electronic products in to compliance with national and international EMC Standards.

  • Single phase
  • Rated current from 3 – 20A
  • Nominal voltage 250 Vac
  • DIN rail mounting
  • Suitable for medical applications

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These EMI filters carry CE, UL and CSA approvals and offer a current range from 1 to 75A with nominal voltage up to 250 Vac as the standard.

Additional select lines are custom available up to 690 Vac. For all models, a dedicated low leakage current solution is available for medical applications.

This series features various connections such as: IEC plugs, fastons, terminal blocks, cables, screws, and DIN rail mounting for fast and easy installation within the enclosure.

CE Marked, UL Recognised, RoHS Compliant,, UL 1283, CSA .22

Typical Applications

  • Conveyors
  • Automated machinery
  • Variable frequency drives
  • Servo drives
  • Medical equipment
  • Packaging machines
  • Printing machines
  • Renewable energy
  • Power supplies

Refer to manufacturer’s datasheet for full technical information.



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Nominal Voltage



50 – 60 Hz

Potential Test Voltage Phase to Phase

1750Vdc (2 sec(

Potential Test Voltage Phase to Ground

2150 Vdc (2 sec)

Leakage Current (Normal Conditions)

< 1 mA *

Leakage Current (Worst Conditions)

< 3 mA

IP Protection


Overload Capability

4 x Rated current (Switch ON) 2 x In 10 seconds 1.5 In for 10 minutes

Climatic Class

-40 / +85° C

Rated Current

3 to 20A

The Enerdoor Group is the industry’s international leader in the development and production of Electromagnetic Solutions for automated and industrial machinery.  Enerdoor provides a wide array of solutions for protection of machinery and equipment, CE approval and testing and elimination of noise, improved reliability and reduced downtime. The Enerdoor Group consists of: Eichhoff Elektro, FinMotor and FinLab which all sit under the parent company.

Renowned for it’s high quality and innovative solutions, Enerdoor manufactures an extensive range of EMI filters, RFI filters, motor protection, harmonic filters, line reactors, surge arresters, voltage stabilisers and customised solutions from their Head Offices in North America and Europe.

Enerdoor supply single phase, three phase and surge protection filters designed to reduce conducted electrical interference in control cabinets. Enerdoor has EMC laboratories in the United States, Germany and Switzerland.

Eichhoff’s manufacturing plant is based in Hungary and strongly focuses on product development and EMC measurement. Eichhoff Elektro has over 40 years experience in safety transformers and electronic ignition systems. They manufacture a wide range of: RFI Filters, Sinus Filters, Reactors, Transformers, PCB Transformers and Ignition Systems.

FinMotor’s manufacturing plant and EMC laboratory is based in Italy. FinMotor manufactures Enerdoor’s EMC Filters, High Frequency inductance and Harmonic Filters for the medical and military markets. They manufacture a wide range of RFI Filters, Passive Harmonic Filters, High Current Sinus Filters, High Frequency Impedances, Motor Protection and Snubbers.

FinLab’s laboratory is based in Milan and focuses on EMC measurement (certification, analysis, solutions and training), harmonic measurement (analysis, solutions and training), acoustic measurement, technical construction file and vibration measurements carried out in their anechoic room and mobile laboratories.


Enerdoor is part of The Enerdoor Group which consists of Enerdoor in North America and Europe; Finmotor and Finlab in Italy; and Eichhoff Elektro in Hungary.

The group is an international leader in the development and production of electromagnetic solutions for automated and industrial machinery.

The broad range of products include: EMI/RFI filters, motor protection, harmonic filters, line reactors, surge arresters, voltage stabilisers and customised solutions.

Learn more about Enerdoor products by getting in touch with GD Rectifiers.




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