| 摘要 |
A multi-pole circuit breaker according to an embodiment of the present invention has single pole circuit breaking units which comprise moving contacts and fixed contacts, a pair of rotation pins which are commonly connected to each of the single pole circuit breaking units to simultaneously open/close each of the single pole circuit breaking units, and an opening/closing unit which is connected to drive the rotation pins. The multi-pole circuit breaker includes a first base plate which is installed between a single circuit breaking unit far from the opening/closing unit and an adjacent single circuit breaking unit among the single circuit breaking units, and has first and second penetration holes into which the rotation pins can be inserted; and a second base plate which has the same appearance as the first base plate and third and fourth penetration holes into which the rotation pins can be inserted. |
