A thermal fuse is a cutoff which uses a one-time fusible link. Unlike a thermal switch which may automatically reset itself when the temperature drops. 


At UKB we assemble these thermal fuse with uttermost care to be used in Refrigerators and Freezers to maintain the temperature of the device.


Maximum temperature limit (TM): The maximum temperature at which a Thermal Cutoff can be maintained for 10 minutes without reclosing the fuse will not change its state, until reaches rated temperature
Holding temperature (TH): The maximum temperature at which a thermal Cutoff will not cause a change in state of conductivity to open circuit while conducting rated current
Rated function temperature (TF): The temperature at which a Thermal Cutoff changes its state of conductivity to open circuit detection current, the tolerance of temperature are +0 -5 deg