General Purpose Motor 3-Phase Totally Enclosed Fan-Cooled 300 HP Nameplate RPM 3575 447/9TS Frame Voltage 230/460 60 Hz 3 Phase 330.0 Full Load Amps No of Speeds 1 Motor Mounting Type Rigid Base Motor Thermal Protection None Ins. Class H 1.15 Motor Service Factor Ball Motor Bearings Motor Frame Material Cast Iron Max Ambient Temp 40 Degrees C CW/CCW Motor Shaft Rotation Overall Length 48-1/16 In. Motor Shaft Design Keyed