SWITCHING MECHANISM FOR MOTOR PROTECTION BREAKER

摘要

PROBLEM TO BE SOLVED: To provide a switching mechanism for a motor protection breaker preventing a phenomenon in which a latch holder is incompletely released from a lock state of a trip lever at a trip operation of the switching mechanism during use of the breaker. SOLUTION: A latch 2 is smoothly inserts between both side pins (4a), (4b) of a latch holder (4) rotating by a prescribed angle at a reset operation of a switching mechanism (1) to prevent the breakage of the mechanism (1) by forcibly pushing up a top lever (3) to be completely released the restriction of the latch holder (4) in any case even if the latch holder (4) is incompletely released from the restriction of the trip lever (3) at the trip operation of the mechanism (1) during the use of the breaker. COPYRIGHT: (C)2005,JPO&NCIPI