Siemens SIPROTEC 5 Series Hardware Description page 27

NOTE
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i
The structure of the 2nd device row is described in chapter
Row.
Connection Systems
[le_connection, 1, --_--]
Figure 2-9
(1) Cut-out for contact tab
(2) Contact tab (prefitted on the expansion module)
(3) Hinged angle clip
(4) Snap-in spring
NOTE
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All on-site operation panels must be connected to one another via the bolt-on contact tabs. The contact
tabs are delivered with the expansion modules.
SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-C, Edition 10.2017
Connection Systems
Forms of Devices and On-Site Operation Panels
2.1 Flush-Mounting Devices
5.2.1.3 Expanding Devices with 2nd Device
27