| 摘要 |
A series double break vacuum switch includes a pair of main electrodes and at least one, but preferably at least two, secondary electrodes juxtaposed in a radial array of parallel spaced rods within a switching chamber. Main electrodes enter the arcing chamber through one longitudinal end and secondary electrodes are interconnected by a common conductive mounting member at the opposite end of the switching chamber. The arrangement and connection of the main and secondary electrodes facilitates "blow out" of initial arc to extended area gaps between main and secondary electrodes and causes current flow in such direction within switch to prevent formation of destructive anode spots.
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