The temperature switch is a temperature switch that uses a bimetal piece as the temperature sensing element. When the electrical appliance is working normally, the bimetal piece is in a free state and the contacts are in a closed/open state. When the temperature rises to the action temperature value, the bimetal piece When the element is heated, it generates internal stress and acts quickly, opening/closing contacts, cutting off/connecting the circuit, thereby providing thermal protection. When the temperature drops to the reset temperature, the contacts automatically close/open and return to normal working conditions. Widely used in household appliance motors and electrical equipment, such as washing machine motors, air conditioning fan motors, transformers, ballasts, electric heating appliances, etc.