Thermal Fuse

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.

Maximum temperature limit(TM) :-  The  maximum  temperature  at  which a Thermal
     Cutoff  can be maintained for 10 minutes without
     re-closing 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  maximum  temperature  at which a Thermal 
                                                             Cutoff changes its state of conductivity to open  
     circuit  detection current, the  tolerance  of  temp
                                                             are +0 to -5 degree.

UL 1007

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