Siemens NXAIR Operating Instructions Manual page 115

To release the actuating opening for the double-bit key, lift the operating slide and hold it.
To release access to the contactor truck, insert the double-bit key and turn clockwise as far as
it will go (that is 90°).
Fig. 185: Lifting the operating
slide
Push the racking crank for moving the contactor truck onto the operating shaft and turn
clockwise as far as it will go.
Remove the racking crank for moving the contactor truck.
Turn the double-bit key clockwise as far as it will go (that is 90°) to interlock the contactor
truck.
Fig. 188: Turning the racking
crank clockwise
Remove the double-bit key.
To close the actuating opening, push the operating slide down as far as it will go.
Fit a padlock (optional) to the operating slide and close it.
✓
The contactor truck has been racked from test position to service position.
110-0134.9 / 14
Operating the contactor panel with panel width 435 mm
Fig. 186: Turning the double-bit
key clockwise
Fig. 189: Turning the double-bit key clockwise
NXAIR / ≤ 40 kA
Fig. 187: Operating shaft for
racking crank
115