•Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2062 •Meets IEEE-841 standard for severe duty applications •100% cast iron construction for rigidity and reduced vibration •Inpro/Seal® VBX® bearing isolators on drive end shaft extension TENV and on both ends of TEFC •IP56 protection •MAX GUARD® Class H insulation system •Constant torque for inverter duty •Sintered bronze breather with brass drain & breather •Bearing caps, Precision balanced to .08”/sec •1.15 Service Factor on sinewave, 1.0 Service Factor on IGBT power