Siemens NXAIR Operating Instructions Manual page 400

Panels with motor operating mechanism control
Procedure
To open the actuating opening for racking, lift the operating slide as far as it will go and
hold it.
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.
Fig. 719: Lifting the operating slide
Remove the racking crank for moving the withdrawable circuit-breaker / circuit-breaker truck.
Depending on the access mode intended, turn the double-bit key until the operating mode
indicator changes to "M" or to "T":
•
To release electrical access to the withdrawable circuit-breaker / circuit-breaker
truck, change from "H" to "M" by turning 90° clockwise.
•
To block any access to the withdrawable circuit-breaker / circuit-breaker truck,
change from "H" to "T" by turning 90° counter-clockwise.
Fig. 721: Turning the key clockwise
Remove the double-bit key.
To close the actuating opening, push the operating slide down as far as it will go.
400
Fig. 720: Turning the racking crank
from
to
Fig. 722: Turning the key counter-
NXAIR / ≤ 40 kA
counter-clockwise
from
to
clockwise
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