This shaft extension is used with size 3 Telergon switch mechanisms to allow side-mounted handle operation on control panel enclosures, suiting types 1 and 2 configurations. It transmits rotary motion from the internal switch shaft to an externally mounted handle positioned on the side of the enclosure rather than the front face. This arrangement is typically specified where front-panel space is limited or where side access to isolator or changeover switch operation is preferred.