ZW8-12型户外高压柱上真空断路器是额定电压为12KV的新型户外高压开关设备，主要用于城网和农网的配电系统中，作为分、合负荷电流、过载电流及短路电流之用。是取代油浸式断路器实现无油化的理想产品。外绝缘采用硅橡胶材料，绝缘可靠，防污秽能力强。ZW8-12真空断路器配用弹簧储能操作机构，可手动操作、电动操作和遥控分合闸操作。可在断路器侧边加装隔离开关，形成户外高压真空断路器一户外高压隔离开关组合电器，增加了可见隔离断口，并具有可靠的联锁操作。根据用户要求，可与相应的控制器配合组成交流高压真空自动重合器、自动分段器，自备操作电源，是实现配电网自动化的理想设备。采用高压电压互感器结构外置，内置均可。ZW8A-12是由ZW8-12断路器与隔离刀组合而成的，称为组合断路器，可作为分段开关使用。
The vacuum circuit breaker on the ZW8-12 type outdoor high pressure column is a new type of outdoor high voltage switchgear with a rated voltage of 12KV. It is mainly used in the distribution system of urban and rural networks as the use of the load current, the overload current and the short circuit current. It is an ideal product to replace oil immersed circuit breaker to achieve oil-free. The outer insulation is made of silicone rubber, with reliable insulation and strong anti fouling ability. The ZW8-12 vacuum circuit breaker is equipped with spring energy storage operation mechanism, which can be operated manually, electrically operated and operated by remote control. The isolation switch can be installed on the side of the circuit breaker to form an outdoor high pressure vacuum circuit breaker and an outdoor high pressure isolating switch, which increases the visible isolation fracture and has reliable interlocking operation. According to the requirements of the user, the AC high voltage vacuum automatic reclose and automatic subsection device can be made up with the corresponding controller, and the automatic power supply is prepared. It is an ideal equipment to realize the automation of the distribution network. The external structure of HV voltage transformer can be built in. ZW8A-12 is made up of ZW8-12 circuit breaker and isolating knife. It is called combined circuit breaker, it can be used as sectional switch.