Power Assemblies and Controllers

Circuit Protection


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 Products by GD Rectifiers

Circuit Protection & Electromagnetic Solutions

Enerdoor provide an extensive range of circuit protection parts, together with Finlab they specialise in the measurement and analysis of CE testing and certification, they provide on-site service to customers around the world through an efficient, global organisation.

DC Filters

Harmonic Filters

Line Reactors

Motor Protection 

Parallel Filters 

Power Factor Correction

Surge Arresters

Voltage Stabilisers 



Enerdoor provide a wide range of electromagnetic parts typically used in: machine tools, renewable energy, packaging equipment, industrial automation and medical equipment. Their extensive product range of EMI and RFI Filters are predominantly used in secondary power supply lines for digital, audio and video devices.

EMI / RFI / EMC Filters   


For further information or to receive a quote, please contact us today on: 01444 243 452 or email: .(JavaScript must be enabled to view this email address)


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.

Further information:

You can find further information on Enerdoor using the following links:

Tel: 01444 243 452

Fax: 01444 870 722

Email: enquiries@gdrectifiers.co.uk