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.

• 它采用多个栅片的灭弧室，利用近极压降将进入到灭弧室中的电弧电压提升到一个较高的值，从而在开断电路的同时还起到对短路电流的限制。