• BLUE CHIP SERIES® SEVERE DUTY / AUTOMOTIVE DUTY MOTORS • NEMA PREMIUM® XRI® MOTORS • TOTALLY ENCLOSED , THREE PHASE • APPLICATIONS: Chemical plants, paper mills, refineries, mines, food processing, foundries, and other severe duty environments where long life and ultra-high efficiency are desired. Guaranteed efficiencies offer an eXtra Return on your Investment when using these premium efficiency motors on high cycle or long run applications. • FEATURES: • Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2007 • 100% cast iron construction for rigidity and reduced vibration • Meets IEEE45 USCG Marine Duty,Meets Ford EM1 Automotive Duty Specification • MAX GUARD® Class H insulation system • IP55 protection • 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 • Internal and external epoxy finish • Model 405TSTFCD6526