The ABB 1SFN125103R1000 is a terminal shroud — a protective cover that fits over the power terminals of a contactor or motor starter. It prevents accidental contact with live busbars during maintenance or inspection, and keeps debris off the connection points in a panel environment.
Mounts over the terminal block of compatible ABB contactors and starters. The 140 mm height and 86.2 mm depth match the standard form factor for ABB's modular accessory range. No wiring changes required — it clips or screws onto the existing contactor body.