MIS-OPERATION PREVENTING DEVICE OF POWER DISTRIBUTION CIRCUIT BREAKER

摘要

PURPOSE:To heighten safety of a plug type power distribution circuit breaker and prevent it from a mix-operation by providing a movable board, which moves in linking to an operation handle a fixed board for fixing the movable board, and locking board by which the projecting part of the movable board is disturbed in the pulling-out direction of the circuit breaker on the surface of the plug type power distribution circuit breaker. CONSTITUTION:A movable board 3, which moves in linking to closing and opening positions of a operation handle, and a fixed board 4 for fixing the movable board 3 are provided on a plug type power distribution circuit breaker 1. Holes 8 are provided in the movable board 3 at the opening position of the operation handle 2 and the fixed board 4. That are in the same positions as setting screw holes 7 used for setting a movable part 5 and a fixed part 6 of the plug type power distribution circuit breaker 1. A locking board 9 by which a projecting part of the movable board 3 is disturbed in a pulling-out direction of the circuit breaker, at the closing position of the operation handle 2 is provided. Thus, since neither insertion nor drawing-out can be performed all the time unless the operation handle 2 is in its opened position, the operation can be carried out very safely.