| 摘要 |
PURPOSE:To enable a low height circuit breaker switch into a stationary disconnecting portion of higher position than that easily by installing the breaker on a supporting board attached to a height able to swich a stationary side disconnecting portion with a movable side disconnecting portion. CONSTITUTION:A circuit breaker 12 having movable side disconnecting portions 11A, 11B is made installed on a supporting board 15 attached to a partition board 5 at a higher position than a floor surface 14 through wheels 13 able to engage into stationary side desconnecting portions 6A, 6B installed on a partition board 5 and connected to bus-bars and cable heads of the other ends. Accordingly when a circuit breaker 12 of a low height is to be used, it enables to switch to stationary side disconnecting portions 6A, 6B provided at a higher position than this easily and by providing a stand 16 at a lower portion of the supporting board 15 and pulling this out a circuit breaker 12 can be shifted upon this to maintain at an ''open'' position. |
