Siemens NXAIR M Operating Instructions Manual page 224

Panels with motor operating mechanism control
Close the control door.
Fit a padlock to the control door and close the padlock.

The withdrawable circuit-breaker has been manually racked from service position to test
position.
224
HINT
Final procedure steps
If "T" is selected, you may now open the high-voltage door and take the
withdrawable circuit-breaker out of the panel.
Otherwise, you may now go on to close the circuit-breaker electrically for
testing purposes.
NXAIR M 139-2021.9 / 07