BREAKING PART WITH COMPRESSIVE THERMAL CHAMBER OF PUFFER TYPE CIRCUIT BREAKER

摘要

PURPOSE: A compression type thermal expansion room cut-out unit of a puffer type is provided to improve the operation stability and the SOHO performance by preparing the cylinder structured thermal expansion room which is supported by an elastomer and is able to compress. CONSTITUTION: A puffer cylinder(310) comprises a movable arc contact point(150), a movable main contact point(160), and a nozzle(170). A fixed contact(180) is installed facing the front of the puffer cylinder. The fixed contact comprises a fixed arc contact(184) and a fixed main contact(182). A thermal expansion room piston(320) is inserted inside the thermal expansion room. An elastomer(330) applies the pushing force to the nozzle direction on the thermal expansion room piston. A thermal expansion gas pipe(340) penetrates the thermal expansion room piston and is expanded to the inside of the thermal expansion room.