Area of Application Protection from overheating in small electric appliances, transformers, electric motors and coils/windings. Function The motor protector ST01 operates independent from any current supply. Temperature detection is effected by means of a bimetal disc. The ST01 exists in Opening (NC) and Closing (NO) types. After cooling down to reset temperature, the bimetal disc returns the contact system to its original position (automatic reset). Datasheet ST01 Datasheet ST06 Enquire Now