• G4 Microtemp Thermal Fuse

G4 Microtemp Thermal Fuse

Model : G4

Rated for continuous operating currents up to 10 amps at 250VAC (15 amps at 120VAC, 5 amps at 24VDC), the G4 series MICROTEMP® thermal fuse is the industry standard for over–temperature protection. The G4 series is applied to millions of appliances and personal care products each year, providing reliable back-up protection for temperature controlling thermostats and other over-temperature conditions. The G4 series is also widely applied in office machines, portable heaters and industrial equipment as a thermal safeguard.



  • Open temperatures (Tf): 72°C to 257°C
  • Holding temperatures (Th) Tf: Tf–15°C
  • Holding temps for Tf between 215°C and 257°C max: 200°C max
  • Holding temperatures for Tf 257°C: 220°C
  • Maximum overshoot temperatures (Tmax): up to 470°C
  • CTI: 250 VAC




  • Cut, formed, or terminated leads available
  • It is important to review the Application Notes for additional information
  • MICROTEMP® thermal fuses from Therm-O-Disc® represent the global standard in thermal fuses
  • MICROTEMP® thermal fuses offer an accurate, reliable solution to the need for upper limit temperature protection against overheating by interrupting an electrical circuit when operating temperatures exceed the rated temperature of the thermal fuse
  • The G4-series is rated for continuous operating currents up to 10 amps at 250 VAC
  • The global agency recognition of the G4-series enables use in a wide range of applications including major and portable appliances as well as personal care products
  • Various mounted and potted options available



  1. Portable Appliance
  2. Major Appliance
  3. HVAC
  4. Power Supplies
  5. Water Heater
  6. Other


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