The thermal fuse of the electric fan is installed at the joint of the coil inside the motor and tied together with many insulating tubes. If the fuse is damaged, the coil of the motor must be extremely high temperature. It is necessary to check whether the motor coil can continue to be used before replacing the thermal fuse, and re-spray insulating paint on the disconnected part to avoid damage. An open current means a disconnection, which means damage or disconnection.

When the circuit inside the electric fan fails, it will cause a short circuit. At this time, if there is a thermal fuse, the instantaneous current is very large, the thermal fuse will be broken, thereby playing a protective role. If it is lost, it will not play a protective role and may affect the normal use of the upper-level power supply.

Extended information:
Thermal fuses can be divided into high-voltage fuses and low-voltage fuses according to the voltage used.
According to the protection object, it can be divided into thermal fuse for protecting transformer and general electrical equipment, thermal fuse for protecting voltage transformer, thermal fuse for protecting power capacitor, thermal fuse for protecting semiconductor components, fuse for protecting motor and Protect the fuses of household appliances, etc. According to the structure, it can be divided into open type, semi-closed type, tube type and spray type fuse.

The open-type fuse has a simple structure, the melt is completely exposed to the air, and is supported by a porcelain column without a support. Suitable for low voltage outdoor use. When the current is interrupted, large sound and light are generated in the atmosphere.

The melt of the semi-enclosed fuse is mounted on a porcelain frame and inserted into a porcelain box with metal sockets at both ends, which is suitable for low-voltage indoor use. When the current is interrupted, the sound and light generated are blocked by the porcelain box.