ZN85-40.5 户内真空断路器适用于额定电压 40.5kV，三相交50Hz 的户内高压设备，可供工矿企业、发电厂及变电站作为分合负荷电流、过载电流、短路电流之用，并适用开断频繁操作场合。
ZN85-40.5 Indoor Vacuum Circuit Breaker is suitable for indoor high-voltage equipment with a rated voltage of 40.5 kV and three-phase AC 50 Hz. It can be used in industrial and mining enterprises, power plants and substations for switching on and off load current, overload current and short -circuit current, and is applicable to frequent operation occasions.