DC Choke Reactors

MSI DC Choke ReactorDC Choke Reactors

DC choke reactors are a type of inductor used on the output of a rectifier to filter or “choke” any high frequency AC component superimposed on the DC.  The impedance of an inductor increases with frequency, allowing the low frequency DC to pass while blocking the higher frequency AC signals.


  • Current ratings up to 2000 ADC
  • Single phase
  • Single or dual coil construction
  • Aluminum or copper windings
  • Designed not to saturate up to customer specified overcurrent
  • Magnetic Specialties core leg construction results in quiet construction
  • Self-cooled, forced-air cooled, or water cooled



  • Temperature monitoring via thermal switches, thermocouples, or platinum RTDs
  • UL Recognized insulation system (System voltage must be less than 600V).  130, 180, and 220°C systems are available
  • CE marking with declaration of conformity (ROHS and Low Voltage Directive where applicable)
  • Private labeling with customer supplied nameplate artwork (Units that are private labeled cannot carry our UL label)
  • NEMA 1 or NEMA 3R cabinets
  • Test Reports with optional Certificate of Compliance