Fire Pump Motor 3-Phase 150 HP Nameplate RPM 1782 Voltage 460 3 Phase Frame 444TS Open Dripproof Number of Speeds 1 Full Load Amps 173 60/50 Hz Base Mounting Thermal Protection None Insulation Class B Service Factor 1.15 Ball Bearings Max Ambient Temp 50 Degrees C Rotation CW/CCW Overall Length 34 In. Shaft Dia 2-3/8 In. Shaft Length 4-3/4 In.