| 摘要 |
The invention concerns a draw-out mechanism (100) comprising a crank handle (200), a screw (202), a ring and a cam (302), which operate in such manner that when the crank handle (200) rotates, the ring moves on the screw (20). The displacement of a pin positioned in a slot of the cam (302) causes the cam (302) to rotate about an axis of rotation. When the cam (302) rotates about the axis of rotation, the pin moves in the slot towards the front or the rear of the draw-out unit (100). A circuit breaker is connected to the side plate (318) and is placed in CONNECT, DISCONNECT, and TEST positions by the displacement of the side plate (318). An indicator provides visual display of the position of the circuit breaker through an orifice (512).
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