Operating the circuit-breaker panel
139-2021.9 / 07 NXAIR M 39
Push the racking crank for moving the withdrawable circuit-breaker onto the operating shaft,
and turn counter-clockwise as far as it will go.
Remove the racking crank for moving the withdrawable circuit-breaker.
Turn the double-bit key counter-clockwise as far as it will go (that is 90°) to interlock the
withdrawable circuit-breaker.
Fig. 52: Turning the racking crank
counter-clockwise
Fig. 53: Turning the double-bit key
counter-clockwise
Remove the double-bit key.
To close the actuating opening, push the operating slide down as far as it will go.
Fit a padlock (optional) to the operating slide and close it.
Fig. 54: Position indicator OPEN (test position)
The withdrawable circuit-breaker has been racked from service position to test position; the
position indicator is in test position (horizontal bar).