Siemens SIPROTEC 5 Series Hardware Description page 36

Forms of Devices and On-Site Operation Panels
2.3 Surface-Mounted Devices with Detached On-Site Operation Panel
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Figure 2-18
(1) Screw cover (pull towards you to remove)
(2) Fastening opening
(3) Fastening opening with fastening screw
36
Fastening Openings for the On-Site Operation Panel
SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-C, Edition 10.2017