Precharge Resistor

Pre-charge resistors are connected in series to limit the inrush current caused by capacitor charging. Pre-charge resistors are excluded after a few seconds by the line contactor.

We designed our pre-charge resistors to provide the highest thermal performances in small space and guarantee, at the same time, an outstanding reliability. Wire or fins design as well as material choice are made to optimize technical solution and cost.

  • Suitable for a very high number of consecutive peaks (High energy density)
  • Light and compact units
  • IP54 welded housing
  • Fully customized solution with range: 5 -200 Ohm (other values on request)
Image Image Image
Wirewound Plate Strip
Voltage [V] 750 ÷ 4000 750 ÷ 4000 750 ÷ 4000
Energy (typical) [MJ] Up to 0.4 MJ Up to 1 MJ Up to 5 MJ
Resistance [Ohm] 0.1 ÷ 500 0.1 ÷ 10 0.1 ÷ 3
Installation Type Inside cabinet Outdoor Outdoor
Weight [kg] 3 5 5
IP Protection Degree Up to IP20 Up to IP20 Up to IP20
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