OVER CURRENT TRIP DEVICE OF A CIRCUIT BREAKER, CAPABLE OF REDUCING DEVIATION OF A MAGNETIC GAP BETWEEN A MAGNETIC YOKE AND AN ARMATURE

摘要

PURPOSE: An over current trip device of a circuit breaker is provided to prevent the deterioration of pressure strength of a case by improving an assembly structure of a trip current control device.;CONSTITUTION: A thermal trip device includes a bimetal(6) and a heater conductor(7). The thermal trip device is connected to a conductive path of a main circuit. A magnetic yoke(8) surrounds the conductive path of a main circuit and surrounds the conductive path of the main circuit. The magnetic yoke is fixed to the heater conductor. An armature(9) is opposite to the magnetic yoke. The armature is rotatably supported in an axial part of a control link(13). The control link is directly supported in the sidewall of the magnetic yoke.;COPYRIGHT KIPO 2010