Air Core Motor Starting Reactors

Motor starting reactors are used to reduce voltage during starting of large 3 phase motors while limiting inrush currents.

Large motors generally draw 6-8 times more current than their nominal current. Typically, they are started with 70% voltage while the remaining 30% is dispersed via the motor starting reactor. After 15 - 20 seconds, the reactor is switched off by contactors in the system.




  • Perfect mechanical strength to withstand high short-circuit forces
  • Limited temperature rise enables longer lifetime
  • Special surface protection against UV and pollution Class IV areas
  • Maintenance-free design



Technical Specifications
Voltage Up to 15 kV
Type Air core, dry type
Frequency 50 Hz / 60 Hz
Installation Enclosure available on demand, side-by-side, delta or vertical arrangement
Winding Aluminium or copper winding
Painting RAL 7035 or other colors on demand
Temperature -40°C to 55°C
Insulation class F class or custom
Cooling AN (air-natural)cooling method
Standards IEEE, IEC and others

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- Enclosure

*Consult factory for higher values.