| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the wiring work in the case where the wiring on load side is three including an earth terminal, by incorporating a plurality of two-pole breakers contiguously to each other at specified pitches into a board, and providing an earth terminal bar where earth terminal screws are arranged, on the side of load terminals on load side of these two-pole breakers. SOLUTION: Two-pole breakers are used as a branch breaker 2, and plural pieces are incorporated adjacently to each other at specified pitches into a board, and an earth terminal bar 6 is provided on the side of the terminal of load side of theses branch breakers 2. This earth terminal bar 6 is one where an earth terminal screw 7 is made at a metallic plate, and the pitch of these earth terminal screws 7 is the same as the mounting pitch of the branch breakers 2. Hereby, even in case that the wiring 4 on load side is three including an earth terminal, the earth wire 5 can be easily connected to the adjacent earth terminal bar 6, making use of the earth terminal srew 7, so the wiring work becomes easy. |
