When the arc is moving to the splitters, the polymer is vapourized and the mixture of air and polymer vapour is filled in the arc chamber. 在電弧向滅弧柵片運動的過程中，聚合體材料受到電弧的燒蝕，滅弧室內充滿空氣和聚合體蒸氣的混合氣體。
With an arc quenching chamber having splitters, the breaker makes the arc voltage,which can limit the short circuit current, to a higher value through the near polar voltage drop. 它採用多個柵片的滅弧室，利用近極壓降將進入到滅弧室中的電弧電壓提升到一個較高的值，從而在開斷電路的同時還起到對短路電流的限制。
