Siemens NXAIR Operating Instructions Manual page 95

Operating the circuit-breaker panel
To interlock the circuit-breaker truck with the panel frame at the bottom, lift the locking
hook (3) and pull the locking bracket (4) totally downwards until snap-in.
Fig.157: Interlocking circuit-breaker truck at the bottom
The circuit-breaker truck is now interlocked with the panel frame at the bottom. The locking
indicator at the locking bracket shows LOCKED.
Fig. 158: Circuit-breaker truck interlocked with panel frame
To interlock the circuit-breaker truck with the panel frame at the center, turn the two locking
levers to the inside.
The circuit-breaker truck is correctly interlocked with the panel as soon as both locking
levers latch tight inside.
Fig. 159: Interlocking circuit-breaker truck at the center
NXAIR / ≤ 40 kA
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