Power Assemblies and Controllers

Circuit Protection

Motor Protection

Enerdoor's motor protection series protects motors from harmful overvoltage and dV/dt spikes generated by the drive's output, ideal for applications with variable frequency drives, servo drives and long cable applications. This series includes common mode and differential mode inductances, sine wave filters and snubbers designed to work with various frequency switches, output frequencies and applications.  The sine wave filter series reduces the pulse wave modulation (PWM) effect, converts the PWM to a sine wave and reduces dV/dt.

Enerdoor's Motor Protection Devices by GD Rectifiers

The FIN915SF model is used with fundamental frequencies up to 2kHz. The high frequency inductance FIN960F is a unique solution used for synchronous motor spindle applications.

View Enerdoor Product Catalogue

Part No.                 Type              Rated Current        Nominal Voltage         Characteristics 
FIN47SNB.50.1M Snubber Motor Protection  - 0 - 500 Vac Reduces dV/dT, remote contact indicator, compact dimensions due to the parallel installation, frequency range 50-50Hz 
FIN900 Three Phase Choke 10 - 280A 500 Vac High impedence, reduces high frequency interference (PWM), cable/screw connections available
FIN930 Reactor on the Line 10 - 200A 600 Vac Common-mode impedance, reduces dV/dT form inverter - motor, low impedance, long motor life
FIN950U Output Reactor - 480 Vac Frequency range 50-60Hz, insulation class H, max current frequency 100Hz
FIN960F Load Reactor 7 - 500A 750 Vac Synchronous electrosplindle application, no heating on the core, high linearity versus frequency
FIN905SF Three Phase Sinusoidal 8 - 880A 480 Vac Reduces dV/dT, increases motor life
FIN915SFH Three Phase Sinusoidal 8 - 250A 480 Vac Reduces dV/dT, increases motor life, very low heating for high frequency application
FINTR Ferrite Core - - Ratings available in different sizes, very high permeability ferrite, plastic cover protection

View Enerdoor's complete product range here.

For further information on Enerdoor's Motor Protection Series, please call: 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