The principle of the temperature controller operates by automatically sampling and monitoring the ambient temperature through a temperature sensor. When the ambient temperature exceeds the set control value, the control circuit is activated, and the control hysteresis can be set. If the temperature continues to rise, the alarm function is triggered when it reaches the set temperature limit. In case the controlled temperature cannot be effectively controlled, the device can be stopped from running further by using the trip function to prevent equipment damage. It is primarily applied in various high and low-voltage switchgear used by the power sector, dry-type transformers, box-type substations, and other related temperature-sensitive applications.

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