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?1 Thermostat, according to the temperature changes of the working environment, physical deformation occurs inside the switch, resulting in some special effects, a series of automatic control elements that produce a on or off action, also called temperature switch, temperature protector, temperature controller, referred to as thermostat. Or through the temperature protector the temperature is transmitted to the temperature controller, the temperature controller issues the switch command, so as to control the operation of the equipment to achieve the ideal temperature and energy saving effect, its application range is very wide, according to different types of thermostat used in home appliances, motors, refrigeration or heating and many other products.

2, its working principle is through the temperature sensor to automatically sample the ambient temperature, real-time monitoring, when the ambient temperature is higher than the control set value, the control circuit starts, you can set the control return difference. If the temperature is still rising, when it rises to the set alarm temperature point, start the alarm function. When the controlled temperature can not be effectively controlled, in order to prevent the damage of the equipment, it can also stop the equipment from continuing to run through the function of tripping. It is mainly used in various high and low voltage switchgear, dry transformer, box-type substation and other related temperature application fields used in the power sector.