Introduction
The operation of a knee-type disconnecting switch is similar to the vertical break disconnecting switch except that the blade motion is in a split-vertical direction due to the articulated blade/arm. This disconnecting switch type is favoured where clearances above the disconnector are restricted.
Knee Break Disconnector Components
Additional Resources
https://en.wikipedia.org/wiki/Disconnector
http://www.tekhar.com/Programma/Siemens/Commutacia/High_voltage/pdf_pict/leaflet_e.pdf
https://library.e.abb.com/public/f3857d62c574463ab32bba6de2d87aea/GW57%20up%20to%20550%20kV.pdf
https://www.hapam.nl/products/horizontal-break-knee-disconnectors-type-vksbiii/