Motor Protection

Protect Motors From Harmful Overvoltage and dV/dt Spikes

Motor Protection

The Enerdoor motor protection series protects motors from harmful overvoltage and dV/dt spikes generated by the drive’s output and is important for applications with variable frequency drives, servo drives, and long cable applications.  These output filters work with various carrier frequencies, output frequencies, and applications, and include differential mode inductance (load reactors), common mode inductance (chokes), sine wave filters, snubbers, and dV/dt filters.

This series carries CE and UL approvals and offers a current range from 3 to 1100A with unique features including high linearity vs frequency and current, very low operating temperatures, and compact dimensions.

Benefits of Enerdoor Motor Protection:

  • Increase motor life
  • Protect motor windings, insulation, and bearings
  • Protect against voltage spikes on the motor 
  • Reduce frequent motor repairs and production downtime
  • Unique solution for high-speed motor applications
  • Works with various carrier frequencies, output frequencies, and applications
  • Output frequencies up to 3 kHz using high-performance materials that run at ambient temps
  • Pass European emission Standards; Carries CE and UL approvals
  • Prevent EMC noncompliance due to radiated emissions from motor cables
  • Reduce motor temperature, very low power loss
  • High linearity vs frequency and current

For more information, please visit: Motor protection application

Browse Motor Protections

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FIN47SNB Snubber dV/dt Filter
  • Three-phase plus neutral star point snubber 
  • Nominal voltage up to 600 Vac
  • Protects motor windings, insulation and bearings
  • Only one model for unlimited HP motors
  • Compact dimensions due to parallel installation
  • Reduces dV/dT

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FIN5955 Differential Inductance
  • Differential mode inductance (load reactor)
  • Rated currents from 3 - 20A
  • Nominal voltage 600 Vac
  • Low power loss up to 250 Hz frequency output
  • Protects against voltage spikes on the motor
  • Increases motor life

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FIN5980P Differential Inductance
  • Load reactor
  • Rated currents from 9 - 22A
  • Nominal voltage 480 Vac
  • Eliminates dV/dt
  • Overvoltage spikes regenerate into the DC bus
FIN5980P

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FIN5983 Differential Inductance
  • Load reactor
  • Rated currents from 12 - 60A
  • Nominal voltage 600 Vac
  • Eliminates dV/dt
  • Footprint with drives manufacturers

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FIN900 Common Inductance
  • Choke
  • Rated currents from 10 - 280A
  • Nominal voltage 600 Vac
  • High impedance
  • Reduces high frequency interference (PWM)
  • Cable/screw connections available
FIN900.(010 - 030).C

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FIN905SF Sine Wave Filter
  • Rated current from 5 - 880A
  • Nominal voltage 600 Vac
  • Reduces dV/dt
  • Increases motor life
  • Ideal for long cable applications
  • Excellent performance versus frequency and current
FIN905SF.(005 - 045).M

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FIN915SFH High Frequency Sine Wave Filter
  • Currents rated from 5 - 1100A
  • Nominal voltage 600 Vac
  • Reduces dV/dt
  • Increases motor life
  • Ideal for high speed motors with output frequency up to 10 kHz
FIN915SFH.(005 - 048).M

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FIN930 Common Inductance
  • Choke
  • Rated currents from 6 - 200A
  • Nominal voltage 600 Vac
  • Low impedance
  • Reduces dV/dt
  • Increases motor life

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FIN950U Differential Inductance
  • Load reactor
  • Rated current from 8 - 300A
  • Nominal voltage 600 Vac
  • Frequency range 0 - 100 Hz
  • Increases motor life
  • Protects against voltage spikes to the motor

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FIN958 Differential Inductance
  • Load reactor
  • Rated current from 12 to 110A
  • Nominal voltage 600 Vac
  • Protects against voltage spikes on the motor
  • Low power loss output frequency up to 1 kHz

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FIN960F Differential Inductance
  • Load reactor
  • Rated currents from 10 - 1000A
  • Nominal voltage 750 Vac
  • Low power loss with frequency output up to 30 kHz
  • High frequency applications
  • Reduces motor temperature
  • Ideal for high speed motors

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FINSTP Star Point Snubber
  • Reduces dV/dt star point - PE
  • Nominal voltage 600 Vac 
  • Protects motor windings, insulation and bearings
  • Over temperature protection
  • Only one model for unlimited HP motors
  • Very low power loss 

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FINTR Toroid and FINFE Ferrite
  • High permeability toroid and ferrite core to reduce common mode noise
  • Plastic covers protects against accidental contact
  • Insulation plastic housing included
  • Helps pass radiated emission test EN61000-6-4
  • For indoor and outdoor applications
  • Available in various sizes

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