Thermal cutoff fuse is a heating protection element (safety component) that melts when the temperature exceeds a certain value.
It is an overheat protection component that shuts off to protect the circuit when abnormal heating occurs, mainly due to a short circuit in an electric circuit or a circuit component failure.
Axial-type thermal cutoff fuse is structured by inserting an easy-to-melt metal into a cylinder and sealing it with epoxy resin.
It must have moderate thixotropy for sealing tight areas and must cure below a temperature at which the metal inside will not fuse.
In addition, to maintain high sealing, adhesion to the lead and case materials is required.
