Panels with motor operating mechanism control
212
NXAIR M
139-2021.9 / 07
Preconditions
Feeder earthing switch in OPEN position
Circuit-breaker in OPEN position
Panel set to local control
Control door open
Withdrawable circuit-breaker in service position or in test position
For electromagnetic interlock (optional):
Electromagnetic interlock deactivated
Access mode indicator shows “M” or “T”
Procedure
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. 359: Lifting the operating slide and inserting the key
To release manual access to the withdrawable circuit-breaker, turn the double-bit key until
the operating mode indicator changes to “H”:
To change from “M” to “H” turn 90° counter-clockwise
To change from “T” to “H” turn 90° clockwise
from
to
from
to
Fig. 360: Turning the key counter-clockwise
Fig. 361: Turning the key clockwise
