Drying cabinet overtemperature protection device

The utility model relates to a drying cabinet overtemperature protection device, it includes air switch F, temperature control instrument U1 and U2, temperature sensor RT1 and RT2, button switch SA1-SA3, starts button switch SB, contactor KM, relay KA1 and KA2, resistance R1 and R2. The utility model has advantages of simple and reasonable structure design, can the effectual circuit fault of preventing lead to the drying cabinet temperature to exceed the loss of setting for harmful effects that the temperature surpasses to drying medium and causing, can set for drying cabinet temperature protective range according to the requirement of different drying medium temperature, temperature control device breaks down when the drying cabinet, automatic cutout power stop work, and fault lamp lights the effect of expressing clearly of playing.