ABB AF140N4-30-11-13 NEMA Size 4 Contactor, 100 A

The ABB AF140N4-30-11-13 is a NEMA Size 4 contactor, rated for 100 A continuous duty. That NEMA size tells you the physical footprint and the thermal capacity — a Size 4 frame handles the 100 A class without needing a separate overload relay in the same package, though you'll still pair it with one for motor protection. The '30-11-13' suffix indicates the auxiliary contact configuration: three normally-open and one normally-closed main poles, plus one N.O. and one N.C. auxiliary built in.