FZW□ series of outdoor high-voltage isolated vacuum load switches are environmentally products without oil or gas pollution. We adopt the linkage structure of isolation contact knife switch and three-phases vacuum interrupters work together. When they open, the evident isolating distances ensure their security, reliability. They are also elaborately designed, and have simple structure as well as small volume. Besides, there is a great convenience to install and maintain the switches. The intelligent controller adopts the modular design, and there is a variety of communication protocols that can be selected. Moreover, it is convenient to be installed and upgraded. The rated voltage of this series of load-breaking switches is 12~72.5kV and they are widely used in transformer substations, industrial and mining enterprises, rural power distribution automation grids and occasions where frequent operations are needed.