Residual current operated circuit breaker

The utility model provides a residual current operated circuit breaker, includes the extremely electrically conductive system of base and setting each in the base, and every extremely electrically conductive system still includes gasket and a current transformer including installing static contact and the moving contact in the base, and respectively extremely the connecting plate of the system of electrically conducting all passes behind the current transformer with correspond the utmost point move contact connection, the bottom protrusion of base be equipped with with gasket or static contact complex gasket installation base, the gasket mountable is between static contact and gasket installation base, with the high extremely required height of stationary contact headrest. The utility model discloses residual current operated circuit breaker in the difference of different rated current according to the current -carrying ability, selects the electric conductor of different sectional areas for use, and is when