Siemens NXAIR Operating Instructions Manual page 155

Procedure
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. 269: Lifting operating slide and
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.
110-0134.9 / 14
Operating the contactor panel with panel width 600 mm
NOTICE
Maloperation
All interlocks are only released when the contactor truck is in a stable end
position.
Rack the contactor truck absolutely until end position.
turning the double-bit key
clockwise
NXAIR / ≤ 40 kA
Fig. 270: Operating shaft for
racking crank
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