| 摘要 |
The invention describes an arc-quenching arrangement for an electrical service switching device, with a fixed contact piece, a movable contact piece, with an arc splitter stack having arc splitter plates, each arc splitter plate having a cutout which is open towards the arc formation point, has a V-shaped notch and tapers in the form of a funnel in the arc running direction, and the arc being guided into the arc splitter stack via a first arc guide rail, which is associated with the fixed contact piece, and a second arc guide rail, which is associated with the movable contact piece. The first arc guide rail has a first, rectangular section, which faces the arc formation location, and a second section, which adjoins the first section and is in the form of a rectangular trapezium and whose first limb extends at an angle with respect to the mid-longitudinal axis of the first section and away therefrom.
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