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Catalog Low voltage Industrial performance motors - ABB
library.e.abb.com— IE3 = Premium efficiency (identical to "NEMA Premium" in the USA for 60 Hz) — IE4 = A future level above IE3 Efficiency levels defined in IEC/EN 60034-30 are based on test methods specified in IEC/EN 60034-2-1:2007. Compared to the former European efficiency classes defined by the CEMEP agreement the scope has been expanded.