1.Higher efficiency 2. energy saving 3. higher locked-rotor-torque 4. lower noise and little vibration 5.higher reliability Specification: Power: 0.49HP-420HPVoltage:220V, 380V,400V,415V, 440V, 660V,Frequency: 50Hz/60HzFrame size: 71-355Insulation class: F pole Data Table: Certification: Product Pictures: High Reliability AC Induction Motor