OVERLOAD SHUTDOWN MECHANISM OF CIRCUIT BREAKER AND ADJUSTMENT METHOD OF OVERLOAD SHUTDOWN TIME

摘要

PROBLEM TO BE SOLVED: To provide an overload shutdown mechanism in which the variation due to individual difference of a screw and the thread of a nut does not affect the adjustment of overload shutdown time, and to provide an adjustment method of overload shutdown time.;SOLUTION: Overload shutdown time is adjusted by rotating an adjustment nut while pressing in the bimetal direction, when a trip bar reaches a trip point, thereby setting the distance between the adjustment nut and the bimetal to a default, and then fixing the adjustment nut by means of a fixing nut. Overload shutdown is performed when the bimetal bends to the nut side and pushes in the adjustment nut, and then an interlocked trip bar reaches a trip point.;COPYRIGHT: (C)2015,JPO&INPIT