| 摘要 |
PURPOSE: To prevent accident due to erroneous insertion of draw out type unit. CONSTITUTION: The erroneous insertion preventer of unit comprises a plurality of containing chambers 2 having front opening 3 formed in a control center 1, a planar body 6 disposed on the fringe of each opening 3, a plurality of positioning parts 7 formed on the planar body 6, an erroneous insertion prevention piece 9 fixed to a selected positioning parts 7, a draw out type unit 12 comprising a main circuit machine, e.g. a circuit breaker 18, or an electric machine, e.g. a controller 16, contained in each containing chamber 2, a machine fixing board 14 standing on each unit 12, and a notched part 15 made in the fringe of the fixing board 14 in order to pass the prevention piece 9. |
