Siemens NXAIR M Operating Instructions Manual page 68

Operating the circuit-breaker panel
Preconditions

Panel prepared, no withdrawable circuit-breaker inserted

Withdrawable circuit-breaker available on service truck

Withdrawable circuit-breaker with the same coding as panel available

Coupling pin of the operating shaft in vertical position

Spring energy store in the circuit-breaker discharged

High-voltage door open

Low-voltage connector stowed away

Auxiliary voltage for the panel disconnected
Move the service truck centrally in front of the panel.
Push the locking elements on the left and right side of the service truck into the openings
provided for this purpose in the panel frame. Observe that the guide rails of the panel and
the service truck are horizontally aligned with each other.
Fig. 110: Service truck in front of panel
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CAUTION
Maloperation
Protruding parts such as locking elements at the service truck or at the rear of the
withdrawable part can cause injuries or material damage.
Move and operate the service truck only at the front side.
Move the service truck only slowly and carefully.
NXAIR M 139-2021.9 / 07