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Intro to The working principle and application of thermal overheat protector | Haichaun

Overheat protector is a commonly used device for safety protection of electrical equipment, which can provide safety protection in various electrical equipment, including household appliances, motors, lighting devices, and others to effectively avoid the occurrence of safety accidents,such as fires caused by equipment overheating. 

August 17, 2023
Intro to The working principle and application of  thermal overheat protector | Haichaun

thermal protector

Overheat thermal protectors are commonly used devices for safety protection in electrical equipment, effectively preventing safety accidents such as fires caused by overheating. Thermal protectors can employ different working principles, with the most common being the use of bimetallic strips, fusible alloys, and other materials as temperature sensing elements to achieve overheating protection for electrical appliances and equipment. The principles of these thermal protectors are based on the characteristic of material expansion with heat. When the temperature of the protected device rises, the thermal expansion of the material causes the bimetallic strip or fusible alloy plate to bend, thereby opening or closing a switch or contact, achieving the purpose of protection.



Thermal protectors can provide safety protection in various electrical equipment, including household appliances, motors, lighting devices, and others. 



In fields like automotive electrical systems, bimetal thermal protectors are also widely used for overheating protection of batteries, enhancing the safety performance of the automotive electrical system.


With the continuous development of technology, thermal protectors will become more efficient and intelligent, providing people with safer and more reliable production and living environments.


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