Siemens NXAIR M - Page 216

Panels with motor operating mechanism control
216 NXAIR M 139-2021.9 / 07
To block any access to the withdrawable circuit-breaker, turn the double-bit key until the
operating mode indicator changes to “T”:
 To change from “H” to “T” turn 90° counter-clockwise
 To change from “M” to “T” turn 180° counter-clockwise
from
to
from
to
Fig. 366: Turning the key 90°
counter-clockwise
Fig. 367: Turning the key 180°
counter-clockwise
Remove the double-bit key and push the operating slide downwards as far as it will go.
Close the control door.
Fit a padlock to the control door and close the padlock.
HINT
Final procedure steps
You may now open the high-voltage door and take the withdrawable
circuit-breaker out of the panel.
HINT
When the control door is closed, the access mode indicator for the withdrawable
circuit-breaker is covered.
If required, open the control door to read the indicator.

Racking the withdrawable circuit-breaker is blocked.