Opening The Circuit-Breaker Manually - Siemens NXAIR Operating Instructions Manual

27.11 Opening the circuit-breaker manually

Opening the circuit-breaker manually is carried out by pushing a rod through an actuating opening in the
high-voltage door, thereby operating the OFF pushbutton behind the high-voltage door. This can be done
with the control door either open or closed. When the control door is closed, the push rod is inserted through
an opening in the control door (1). The indicator for the circuit-breaker position can be seen through an
inspection window (2).
Fig. 723: Circuit-breaker type 3AE1:
Actuating opening for opening the
circuit-breaker manually
Fig. 725: Circuit-breaker
type 3AE1:
Control door
110-0134.9 / 14
Panels with motor operating mechanism control
Fig. 724: Circuit-breaker type 3AE5:
1
2
Fig. 726: Circuit-breaker
type 3AE5:
Control door
NOTICE
Conflicting operation
The requirement of setting the panel to either local or remote control prevents
operating the panel locally and centrally at the same time.
For any local operations ─ manual or electrical ─ set the panel to local
control, for example by switching the local-remote switch to LOCAL
position.
NXAIR / ≤ 40 kA
Actuating opening for opening the
circuit-breaker manually
(1)
(2)
Actuating opening for
opening the circuit-
breaker
Inspection window for
CLOSED/OPEN
indicator of the circuit-
breaker
403