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SEFUSE SF-K Slim Thermal Fuses

Our SEFUSE SF-K  one-shot thermal fuse is a smaller slimmer version of our SF-R series. They use an organic thermosensitive pellet within a metal case. preventing electrical appliances from catching fire due to overheating.

They boast high reliability and accuracy due to the resin-seal, and highly sensitive to temperature rise due to their small size and shape.

It features a large rated current of upto 10A/250VAC and calibration up to 216°C.


These products can be used in a great variety of applications including :-

  • Li-ion Batteries
  • Small Kitchen Appliances
  • Personal Care Appliances
  • Office equipment e.g. copiers, laser printers, power strips.
  • Air Conditioning and Heating Appliances
  • Automotive Electronics


  • Slimmest one shot thermal fuse diameter within SF range.
  • Slim metal fuse body: 3 x 7.5mm
  • Very quick response time
  • High Tmax rating
  • Temp range: 73°C to 216°C
  • Rating: 10A/250VAC

Stock Fuses: SF70K, SF90K, SF96K, SF214K

SEFUSE SF-K Slim Thermal Fuses

Technical Line Drawing