| 摘要 |
The insulating case has end-caps supporting, e.g., four bars (10) stamped out of plate copper or alloy, maintaining the bar faces parallel at suitable spacing, with edges level. Each bar end (11, 12) is formed into a connecting lug, right and left ends being complementary, to allow lateral extension using identical units. The stampings include tee-bars (16, 17, 18); these are bent to bridge adjacent bars with adequate clearance, and terminate in sets (13, 14, 15) of four connections within emplacements provided in the case for mounting four-pole circuit-breakers or other control devices. The bridging sections are shrouded by the case, with ventilation slots, also provided in each end-cap. The case also includes a longitudinal covered trough, with exit holes and guides, for circuit-breaker control wiring. |
