| 摘要 |
PROBLEM TO BE SOLVED: To restrain deterioration of a lead wire and attain size reduction by fitting a guide member for guiding the lead wire so as to run at least one a side surface on bus bar side of a case. SOLUTION: A guide member 8, which guides a lead wire 7 so as to run on a side surface on the bus bar side of the case of the second branch breaker 6 and a side surface adjacent to it, is constituted of resin, and its cross section is of such a shape as a roughly U-shaped trough-like part is bent at right angles in its middle part. The guide member 8 is not fixed on the case or engaged, however, by fitting the lead wire 7 inwards, attaching it on the case, and fixing the second branch breaker 6 on a box body, the guide member 8 is brought into contact with a fitted apparatus around a bus bar or the like to regulate its movement, thus it is possible to retain the lead wire 7 at the side surface of the second branch breaker 6. As a result, the heat generated at the bus bar has difficulty in transmitting to the lead wire 7, thereby restraining the lead wire 7 from being deteriorated and attaining size reduction. |
