KSD01F-110 is a TO-220-packaged Temperature Switch/Thermal switch. The Calibrated Bimetal will quickly connect the circuits (usually opened) when the outside temperature is too high. When the temperature drops to the reset temperature, the bimetal will revert to the reset position.
The protection of the safety of the product temperature is frequently ensured in this way. Common applications included the alarm system circuit ON/OFF when overheated electrical equipment, electronic items, power supplies, vehicles, medical equipment, test equipment, home appliances, and circuit boards for temperature management and thermal overload protection.