Current Sense Transformers


Current sensing is a critical element of most power supplies.   Addressing the technological needs
of the next generation of power supplies WCM has developed a number of products for both linear
and switched applications.  The design philosophy embodied in these products was to create very
compact, highly linear, magnetic based current sensors, with robust isolation to satisfy global safety
agency requirements.   For switched applications WCM has a number of sensing transformers that
can accommodate up to 50 amps of current, in both through hole and surface mount configuration,
with a frequency range from 10 kHz to 500 kHz.  On the linear side, WCM offers a great through hole
product with highly linear response up to 500 amps.  If you don’t see what you want in our standard
products, contact us for a custom design.


603 current sense transformers

SMD Current Sense Transformer (603 Series)

  • Sense current to 20 amps
  • Sense frequency to 1 MHz
  • 3000 Vac isolation
  • Low profile SMD
  • Tape and reel
602 45 Amp current sense transformers

45 Amp Current Sense Transformer (602 Series)

  • Sense current to 45 amps
  • 10kHz to 500kHz sense frequency
  • 3750 Vac isolation
  • Horizontal and vertical mount
601 100 khz current sense transformers

100 kHz Current Sense Transformer (601 Series)

  • Sense current to 30 amps
  • 10kHz to 600kHz sense frequency
  • 3000 Vac isolation
  • Horizontal and vertical mount
604 current sense transformers

50Hz-1kHz Current Sense Transformer (604 Series)

  • High accuracy
  • 50 Hz to 1000 Hz operation
  • 100 amp continuous rating
  • High isolation
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