| 摘要 |
PURPOSE:To obtain a downsized drawing-type circuit breaker in which maintenance and inspection are facilitated by lengthening the drawing stroke without lengthening the slide frame. CONSTITUTION:The drawing-type circuit breaker comprises a pair of vertical rails 3A, 3B laid, respectively, on the opposite side boards 1a of a draw-out frame 1, a first sliding frame 5 held drawably on the rails, a second slide frame 7 fixed to the side face of a circuit breaker 11 while being held drawably on the first sliding frame 5, and a lock member 12 for locking the second sliding frame 7 to the first sliding frame 5 up to the end of sliding of the first sliding frame 5 and unlocked by means of the second sliding frame 7 being pushed in. |
