What lands on the shelf
The ABB 1SBL181001R8310 is an electrical contactor in the Contactors and Starters line under Circuit Breakers, Fuses & Protection — a stocked slot in any panel-builder's motor-control cabinet rather than a one-off special.
Where this class of part sits in a panel
Electrical contactors at this ABB framing carry the switching duty for motor and resistive loads inside a control panel — they sit downstream of the breaker, upstream of the load, and are usually what the wireman reaches for first when a coil or aux block needs swapping.