FZW28-12 series outdoor demarcation vacuum load switch is suitable for outdoor three-phase AC power distribution system with rated voltage of 12kV and three-phase AC 50Hz. It is used for opening and closing load current and closing short-circuit current.

It is suitable for substations, industrial and mining enterprises and cities, agricultural network protection cities, agricultural network automatic distribution networks and places where frequent operations are performed.The boundary load switch is composed of two parts: FZW28-12 vacuum load switch and controller. It is electrically connected through an air socket and outdoor sealed control cable, which can reliably judge the zero sequence current and interphase break current of the milliampere inside and outside the detection boundary Main distribution system with different neutral grounding.

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