The circuit breakers are suitable used in AC and DC 32A and below electric circuits Of 50Hz．up to 380V and up to DC250V respectively，for protection of electrical circuits and apparatus in office and residence buildings，and for protection of circuit terminals against overload and shout circuit．The item is a durable protection that substitutes the tradition fuse element and call be used in each use socket with E27 thread according to DIN 40440．