The GS2ADL2 is a flat mounting kit in the TeSys GS range, designed to mount switch disconnector bodies rated from 50 A up to 400 A onto a flat panel or backplate. The 10 x 10 mm shaft cross section and 200 mm length match the standard TeSys GS rotary handle interface — you bolt the kit to the panel, couple the handle shaft, and the switch body mounts behind it.
The 50 to 400 A current range covers the full TeSys GS switch-disconnector family, from the small GS1AD up through the 400 A frame. The 10 x 10 mm square shaft is the standard interface for TeSys GS rotary handles — if you're replacing a handle or retrofitting a panel, that's the dimension that decides whether the handle couples to the switch. The 200 mm length gives you enough reach to pass through a panel door or enclosure wall and still engage the switch body's drive mechanism.
Deployment context
This is a panel-mount accessory — you're bolting it to a flat backplate or enclosure wall, not snapping it onto DIN rail. The flat mounting profile keeps the switch body close to the panel surface, which matters when you're tight on depth behind a door.