The safety protection element in the circuit is a fuse or fuse, which mainly plays the role of overload protection, and the fuse is correctly placed in the circuit, and the fuse will fuse itself when the current abnormally rises to a certain height and heat.
The fuse used for overcurrent protection is commonly referred to as a fuse (also called a current-limiting fuse). Fuses used for overheat protection are generally referred to as. Temperature fuse " .