Series D

Metric Dimensions are shown in mm (Shown in green)
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These cost-effective, thermal fuses function when the operating or ambient temperature rises above a pre-set level. At that point the organic pellet melts causing an internal barrel spring to expand and breaks the contacts to open the circuit.


  • Single operation device. Once activated the electrical circuit remains permanently open until fuse is replaced.
  • Quick Break: When operating or ambient temperature rises above calibration point, organic pellet quickly melts breaking circuit.
  • Cost-Effective: Thermal fuses are among the least expensive circuit protection devices available.
  • Custom Configurations:  Customized lead lenghts, bending of leads, and various terminal options are available. Please contact us regarding termination options.

Contact Ratings

For a complete listing of all contract ratings, please refer to the PDF data sheet

Calibration Range

  • Calibration Temperature Range: Pellet can be set to melt at temperatures ranging from 72°C to 240°C.

Standard Marking System

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