Siemens NXAIR M Operating Instructions Manual page 215

Fig. 364: Access mode indicator for racking: starting point "H" or "M"
Preconditions

Withdrawable circuit-breaker in test position

Panel set to local control

Control door open

Feeder earthing switch in OPEN position

Access mode indicator shows "M", or double-bit key for selecting racking mode inserted and access
mode indicator shows "H"

For electromagnetic interlock (optional):

Electromagnetic interlock deactivated
Procedure
If the access mode indicator shows "M" and the double-bit key is not inserted, insert it:
To release the actuating opening for the double-bit key, lift the operating slide (1) and hold it.
Insert the double-bit key (2).
Fig. 365: Lifting the operating slide
139-2021.9 / 07
Panels with motor operating mechanism control
and inserting the key: starting point "M"
NXAIR M
or
215