GT1018A Marathon 10HP Globetrotter Electric Motor, 3600RPMFeatures Meets or exceeds NEMA Premium efficiency. Model is in compliance with EISA2011 Hazardous Duty Division 2, Zone 2, Class I, Groups A,B,C,D, Temperature code T2B IP55 enclosure on cast iron frames Inverter Duty 10: 1 Variable Torque and up to 10: 1 Constant Torque Class F Insulation Standard F1, reversible to F2 assembly. Dual frame mounting holes. C face addition may result in non NEMA "BA" dim. For new "BA" dim consult chart found in