The ABB AF75-30-11-72RT is a 105A, 3-pole contactor with a 24..60V AC/DC coil. It's a standard-duty power switching device for motor loads, resistive heaters, and general panel circuits where you need to close and open three-phase power under control voltage. The 105A rating is the thermal (AC-1) continuous current — what it can carry in a resistive load circuit without overheating. For motor duty (AC-3), the rated operational current will be lower; check the full datasheet curve if you're switching a 3-phase induction motor to confirm the actual switching capacity at your load's inrush.
Coil voltage range and panel integration
The coil accepts 24 to 60 V AC or DC — wide-range, so it covers 24 VDC control buses common in PLC cabinets as well as 48 VAC or 60 VDC legacy systems without needing a separate coil-change. Snap-on DIN-rail mount fits standard 35 mm rail; the 3-pole power terminals accept cable lugs up to the rated cross-section for 105 A. Built-in auxiliary contacts (1 NO + 1 NC) give you feedback to the PLC or a holding circuit without adding a side-mount block. That saves a DIN slot and a wiring step on the panel.