The product vacuum arcing chamber adopts porcelain case, cup shape and longitudinal magnetic field contactor structure, copper and chrome contactor material, it has the capacity of good open and close short circuit current.

• 本产品真空灭弧室采用陶瓷外壳，杯状纵磁场触头结构，铜铬触头材料，具有优良的开断和关合短路电流能力。