With the development of science, the progress of the era of economic globalization today, constantly improve people’s quality of life, the electrical appliances product modeling, function, especially the safety requirements more and more high. At present, with thermal protection function of the electric heating tube 电加热管(overheating protection function of the electric heating pipe) 电热管的过热保护功能are widely applied in the portable inflating bathtub, electric oil heater, electric water heaters and other products. With thermal protection function of the electric heating tube to temperature control and overheat safety protection products.
With heat protection function of the electric heating tube电加热管 (overheating protection function of the electric heating pipe) 电热管的过热保护功能most of the use of thermal fuse and fuse as temperature control device, when the rated temperature of electric heating tube over heat fuse, thermal fuse can quickly break through electric circuit of the electric heating pipe heating pipe, to avoid overheating fire and electric heating tube damage hazards.
Characteristics of hot electric heat pipe thermal fuse protection: one-time action to cut off the current, current interruption capacity of up to 250 VAC/25A, low resistance, small size.
Electric heating tube overheating protection thermal fuse works: thermal fuse trigger mechanism is not conductive thermal a unique formula made by the pill. At normal operating temperature, pellet solid against the spring, the contact contact. When it reaches a predetermined temperature, thermal pill will melt, the compression spring to relax, and break the spring drives the contact point from the contact wire, the circuit is disconnected.