How does a thermal protector work?
Dec 29, 2022|
View:206Thermal protector is a temperature control instrument. When the temperature in the circuit is too high, it will trigger the thermal protector to disconnect the circuit to avoid equipment burning or even electrical accidents. When the temperature drops to the normal range, the circuit is closed and normal working state is restored. Thermal protector has self-protection function and has the advantages of adjustable protection range, wide application range, convenient operation, high pressure resistance, etc. It is now widely used in washing machines, air conditioners, ballasts, transformers and other electrical equipment. So what is the working principle of thermal protector? Let the thermal protector manufacturer give you a detailed introduction!
Thermal protectorThe circuit protection is completed by the bimetallic strip. At first, the bimetallic strip is in contact and the circuit is turned on. When the circuit temperature gradually rises, the bimetallic strip has different thermal expansion coefficients and the deformation occurs differently when heated. Therefore, when the temperature rises to a certain critical point, the bimetallic strip becomes separated and the circuit is disconnected to complete the circuit protection function. However, due to the working principle of the thermal protector, it is important not to forcefully press, pull, or twist the lead wire during its installation and use.
Thermal protectorThere are different classification methods according to different classification standards. According to the different volumes, they can be divided into large-volume thermal protectors, conventional thermal protectors and ultra-thin thermal protectors; according to the different action properties, they can be divided into normally open action type thermal protectors and normally closed action type thermal protectors; according to the different recovery methods, they can be divided into self-recovering thermal protectors and non-self-recovering thermal protectors. Among them, the self-recovering thermal protector means that after the temperature is too high and the thermal protector is disconnected, when the temperature drops back to the normal range, the thermal protector can automatically restore to its original state to make the circuit conductive, while the non-self-recovering thermal protector cannot complete this function and can only be restored manually. Therefore, the self-recovering thermal protector has a wider application than the non-self-recovering type.
The above is some introduction about the working principle of thermal protector. Changzhou Ainuo Electronic Technology Co., Ltd. is a thermal protector manufacturer. We have many years of experience in producing and selling thermal protectors. The thermal protectors we currently produce are not only of good quality but also relatively inexpensive. If you need, please feel free to consult us!
