MECHANISM FOR INSERTING/REMOVING RETROFIT CIRCUIT BREAKER

PROBLEM TO BE SOLVED: To provide mechanism for inserting/removing a retrofit circuit breaker, for enabling inserting/removing operation in replacement with a simple configuration. SOLUTION: When a slide plate 17 is slidably pulled one stage with respect to a handle lever 16, a protrusion 17a at a distal end of the slide plate 17 comes off from a recess 13a of a bearing 13. When the handle lever 16 is rotated counterclockwise downward in this state, an insertion/removal shaft 10 is rotated together with a disk-like inserting/removing lever 12. The engagement between a pin 18 and a notch 12a of the inserting/removing lever 12 is released by further sliding the slide plate 17 downward, and the pin 18 is engaged with a next notch 12b by rotating the handle lever 16 clockwise upward. This operation is repeated until the retrofit circuit breaker 1 reaches an insertion completion position. COPYRIGHT: (C)2009,JPO&INPIT