| 摘要 |
An arc chute for an electrical switch apparatus includes sidewalls which converge together toward the top and which are perforated ceramic plates arranged on each side of the electrodes forming the arc. The plates form a wedge-shaped arc space within the electrode space and also on the exterior of the plates and vertical fire walls. Each of the exterior wedge-shaped arc spaces is divided by intermediate substantially vertical division walls or webs which extend substantially perpendicular to the fire walls. The interior wedge-shaped arc space is closed preferably by a perforated plate made of ceramic material. The two plates forming the interior wedge-shaped arc space either converge to a point or they are spaced apart at their tops by a crossmember or horizontal plate.
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