The NATE1-18-56CB is a 1-horsepower, 3-phase electric motor from Worldwide Electric. This motor features Class F insulation, fan cooling, a 1.15 service factor, is a premium efficiency motor, and is rated for inverter duty. Also suitable for 50Hz operation with a 1.0 service factor. Comes with Worldwide Electric motor standard features for TEFC enclosed 56-frame fractional 3-phase motor, including a removable base, with a C-face, and a shaft slinger to keep moisture and contaminants from the end of the drive-end bearing for longevity. Details & Specifications: 1 Horsepower 3 Phase TEFC Fully Enclosed 56C Frame 208-230/460 Volt 1800 RPM Fan Cooled Class F Insulation C-Face Removable Base Premium Efficiency / Inverter Rated Worldwide Electric Brand Keyed 5/8" Diameter Shaft Shaft Length: Approximately 1 7/8" Current: AC Full Load Amps: 3.22/1.61A (3.06/1.53A) 60Hz