| 摘要 |
In this vacuum circuit-breaker (2), a front plate (9), breaker parts (12), and connection terminals (13) are arranged from the front side to the back side of the vacuum circuit-breaker (2). The vacuum circuit-breaker (2) is inserted into or pulled out from an electric distribution panel (1) so that the deepest side of the connection terminals (13) of the vacuum circuit-breaker is brought into contact with or separated from the main circuit connection terminals (8) on the electric distribution panel (1) side. A plate-shaped grounding member (15) that surrounds the side surface or the top surface of the breaker parts (12) and the connection terminals (13) is disposed at a position that secures a distance from the breaker parts (12) and the connection terminals (13) by a predetermined spatial insulation distance or greater. |
