The ABB AF750N7-3011-71 is a NEMA-S7 frame, 3-pole contactor rated for 722 A continuous current. This is a heavy-duty power switching device sized for large motor loads, resistive heating banks, or feeder isolation in industrial control panels. The 722 A rating places it in the high-current tier of NEMA contactors, intended for applications where IEC frame sizes would require paralleling smaller units.
Deployment context
The NEMA-S7 frame is a panel-mount design, typically bolted to a backplate or sub-panel rather than snapped onto DIN rail. At 722 A, expect busbar or large-gauge cable connections — this is not a control-circuit contactor; it lives in the power distribution section of the enclosure.