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16.06.17 /  Kategorie: Passive Bauelemente, Beck Handel

New UL1412 Approved Wirewound Fusing Resistors



The new CFWS-series of fusible power wirewound resistors is now available from KOA.

In normal operation the CFWS series resistor acts as an inrush current control resistor but will safely fuse in specified power overload cases.

The CFWS series is available with 3W or 5W power ratings. Both power ratings are approved to UL1412.


  • Approved by UL1412 (File No.: E134679)
  • Flame retardant coating (Equivalent to UL94-V-0)
  • Fail safe mains fusing at AC 250 V
    (CWFS23: 4.7 Ω ~ 9.1 Ω : AC 200 V)
  • T.C.R.: ± 100 ppm/K
  • Temperature range: -55 °C to +200 °C
  • EU-RoHS compliant


  • Smart meters
  • Pre charge resistors
  • Inrush current control
  • Power supplies
  • LED drivers
  • White goods
  • etc.