3-Phase NEMA Premium® Energy-Efficient Close-Coupled Pump Motors• Mounting: face with base Thermal protection: none Insulation: Class F, with B temperature rise for longer life Voltage: 208-230/460V Max. ambient: 40°C Rotation: CW/CCW Inverter rated: 20:1 constant, 1000:1 variable torque Service factor: 1.25 Open enclosure, 1.15 for Totally Enclosed modelsClose-coupled motors meet or exceed NEMA Premium requirement for energy efficiency. For additional ratings, see Grainger.com®. For use in water pumping, process, transfer, and circulating pumps. TEFC motors are designed for severe-duty applications.All motors are UL Recognized, CSA Certified, and CE Compliant.