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 and servo drives.  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.

Benefits of Enerdoor Motor Protection:

  • Increase motor life
  • Protect motor windings, insulation, and bearings
  • Protect against voltage spikes on the motor 
  • Works with various carrier frequencies, output frequencies, and applications
  • Output frequencies up to 3 kHz using high-performance material that run at ambient temps
  • Pass European emission Standards; Carries CE and UL approvals
  • 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
  • Nominal voltage 600 Vac
  • Reduces dV/dT
  • Remote contact indicator
  • Compact dimensions due to the parallel installation
  • Only one model for unlimited HP motors

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FIN5955 Differential 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

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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

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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

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

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FINTR Toroid and FINFE Ferrite
  • Ferrite core
  • Very high permeability ferrite
  • Plastic covers protect against accidental contact
  • Insulation plastic housing included
  • Helps pass radiated emission test EN61000-6-4
  • Available in various sizes

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