Siemens NXAIR Operating Instructions Manual page 51

Procedure
Lift the operating slide and hold it.
To release access to the withdrawable circuit-breaker / circuit-breaker truck, insert the
double-bit key and turn counter-clockwise as far as it will go (that is 90°).
Fig. 70: Lifting the operating slide
Push the racking crank for moving the withdrawable circuit-breaker / circuit-breaker truck
onto the operating shaft, and turn counter-clockwise as far as it will go.
Remove the racking crank for moving the withdrawable circuit-breaker / circuit-breaker truck.
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NOTICE
Maloperation
All interlocks are only released when the withdrawable circuit-breaker / circuit-
breaker truck is in a stable end position.
Always rack the withdrawable circuit-breaker / circuit-breaker truck
completely up to the end position.
NXAIR / ≤ 40 kA
Operating the circuit-breaker panel
Fig. 71: Turning the double-bit key
counter-clockwise
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