| 摘要 |
PROBLEM TO BE SOLVED: To provide a ground-installed multi-circuit switch capable of being enlarged corresponding to the number of customer at a low cost without requiring much labor. SOLUTION: A connector 10 is previously provided on an end of a branch line 3 of an existing multi-circuit switch unit 1 made up by juxtaposing, for example, four individual switches 2a to 2d and parallel-connecting them by the branch line 3 in the side of their one end. For enlargement, the connector 10 is connected to a branch line 8 of another multi-circuit switch unit 7 made up by juxtaposing, for example, two individual switches 2e, 2f and parallel- connecting them with the branch line 8 on the side of their one end. Both the existing multi-circuit switch unit 1 and another multi-circuit switch unit 7 are housed in an existing case 11. |
