ABB LWT300 series User Manual page 46

NOTICE
DO NOT use a magnetic screwdriver.
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Figure 27 Accessing the write-protection screw
2 Using a suitable screwdriver, fully press down on the write-protection screw and turn 90° clockwise
to activate hardware write protection or, if already activated, 90° counterclockwise to deactivate it.
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Figure 28 Activating hardware write protection
Deactivated write
protection (default)
42
User Guide
Nameplate
Write-protection screw
Activated write
protection