Siemens NXAIR Operating Instructions Manual page 357

Contactor panels with panel width 435 mm only:
At the rear side of the panel, insert the rear wall (2) by the handle.
Fix the rear wall by screwing the bolts hand-tight:
•
3 bolts size M8x20 (1)
Tighten the bolts with a tightening torque of 25 Nm.
Fig. 658: Contactor panels with panel width 435 mm only:
Insert the 2 sealing brackets (3) into the vertical gaps between the panels.
Install one of the vertical ledges (4). Fix it by screwing the bolts hand-tight:
•
15 bolts size M8x20 with contact washers
Tighten the bolts with a tightening torque of 25 Nm.
Proceed in the same way with the other vertical ledge.
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Accessing the connection compartment through the rear
1
2
Inserting and fixing the rear wall
NXAIR / ≤ 40 kA
(1) Bolts to screw
(2) Rear wall with handle
357