In built-in switches of the opener type, the contacts open suddenly in case of overheating. Once it has cooled accordingly, the bimetallic switch automatically jumps back to its starting position and reinstates the contact. The maximum switching capacity of type C01 is 6.3 A; for type C06 it is 25 A.
In built-in switches of the closer type, the contacts close suddenly in case of overheating. Once it has cooled accordingly, the bimetallic switch automatically jumps back to its starting position and opens the contact again. The maximum switching capacity of type C02 is 6.3 A; for type C08 it is 25 A.