Siemens NXAIR Operating Instructions Manual page 366

Key-operated interlocks
Fig. 664: Example: Cover lifted (circuit-breaker panel width 600 mm)
Fig. 665: Example: Cover lifted
(circuit-breaker panel width 800 / 1000 mm)
366
(1) Cover, lifted
(2) Screw thread for rotary button
Key release:
(3) Only when feeder earthing switch is in
CLOSED position
Key release:
Only when feeder earthing switch is in
(4)
OPEN position
Key release:
(5) Only when withdrawable part / switching-
device truck is racked to test position
NXAIR / ≤ 40 kA
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