Reactive current compensation


Type-tested quality "Made in Germany".

As a leading manufacturer of compensation units, we develop and produce capacitors, modules, inductors and controllers in Germany. In our production facilities, certified in accordance with DIN ISO 9001, we produce according to VDE 0660 part 500, VDE 0670 part 604, VDE 0470 part 1, VDE 0560 part 41, EN 60439-1 and IEC 61921.

Power capacitors

  • Produced by KBR in Schwabach, Germany
  • Power from 1.5 to 37 kvar
  • Capacitor nominal voltage of 280, 440, 480, 525 or 690 V
  • 1-phase or 3-phase design
  • High level of safety through drying technology and all-phase overpressure disconnector
  • Including compact discharge resistor
  • Long working life





Filter circuit reactor

  • With air gap, reducing eddy currents and hysteresis losses
  • Power dissipation 0.9 - 1.1 watt/kg
  • Sheet thickness 0.3 mm, normal 0.4 - 0.5 mm
  • Aluminum angles with insulated screws for attachment. This way, no magnetic short circuit through eddy currents occurs and less loss
  • Thanks to the air gap, the inductor is not saturated due to increased current load when switching on and due to high harmonic current load
  • Air and cooling ducts (KBR know-how)
  • Larger surface, winding does not lie directly at the iron core, better heat dissipation, the inductor remains approx. 10 - 12 °C cooler at effective load. This way, the working life is increased by approx. 30 %
  • Environmentally friendly impregnating varnish, no hazardous substances
  • Flat copper wire, permissible temperature class F under constant load, flat wire results in improved heat dissipation compared to round wire
  • Temperature class F = 155°C
  • On-time 100%
  • Linearity up to 2.5-fold rated current
  • Temperature probe switch-off at 120 °C


  • Increase in working life, due to no wear of switching contacts.
  • Unlimited switching frequency.
  • No load of the capacitors, due to controlled switch-on.
  • No peak inrush current when switching on capacitors.
  • Low switching delay.
  • Compensation almost in real-time.
  • Compact construction.
  • No additional supply voltage required
  • No operating noise.
  • Symmetrical three phase current compensation or two separate alternating current compensation stages (simultaneous).


Components for reactive power compensation

KBR-Catalogue - Components for power compensation