Exemplary embodiments of the present disclosure are directed to a method for producing a circuit-breaker pole part by molding an external insulating sleeve with insulation material, mounting a vacuum interrupter insert inside the insulating sleeve, electrically connecting the vacuum interrupter insert with an upper electrical terminal and a lower electrical terminal arranged in the wall section of the insulating sleeve The method also includes molding the external insulating sleeve, wherein only the upper electrical terminal is embedded in the insulation material, coating the vacuum interrupter insert with an extra layer made of insulation material for thermo extension compensation, mounting the coated vacuum interrupter insert by screwing on a threaded bolt onto the upper electrical terminal.