The working principle of the mechanical temperature control switch is through the action of bimetallic strips to control the circuit's on/off, thereby ensuring the safe operation of various equipment. Due to the wide range of applications for temperature control switches, different models of switches are used for various application scenarios. When selecting a temperature controller, in addition to focusing on electrical parameters, size, and temperature, the application environment should also be considered. For example, products used in low-temperature and high-temperature environments differ. If categorized in this way, they can be further divided into plastic housing, metal housing, Bakelite, and ceramic.

Ceramic-type temperature control switches are commonly used in high-temperature environments due to their strong heat resistance. Therefore, it is recommended to use a ceramic-body temperature controller when the equipment is in a high-temperature environment, as they are often used in fire protection equipment. The ceramic-type thermal cut-out switches can protect temperatures up to 280 degrees Celsius and can withstand relatively high temperatures. However, it is important to note that while ceramic temperature controllers can withstand high temperatures, they should not be placed in environments exceeding 300°C. Excessive heat may cause the internal chips to lose elasticity, rendering the temperature control switch ineffective.