Electrical Type: Three Phase HP: 30 Frame: 286TPH Enclosure: WPI Phase: Three Voltage: 230/460 Type: AUSI Down Thrust: 3300 LBS Base Diameter: 16.500" Coupling Height: 24.750" Coupling Bore Size: 1 Coupling Keyway: 1/4 Vertical HOLLOSHAFT High Thrust Motors - "P" Base, Three Phase|Weather Protected Type I (WPI) Premium Efficient & Inverter Duty|Class F Insulation, Class B Rise at Full Load (Sine Wave Power)|1.15 Service Factor (Sine Wave Power)|Maximum 40 degrees C Ambient, 3,300 Feet Altitude|230/460 Volt Motors Suitable for 230 Volt Part Winding Start|30 HP & Below Can Be Rerated for 208/415 Volt, 50 Hertz Operation at 1.0 Service Factor (230/460 Volt Ratings Only)|Premium Efficient Design|Special Balance|115 Volt Space Heater (through 250 HP)|Normally Closed Thermostats (1 per Phase)|Corrosion Resistant Mill & Chemical Duty Paint|Inverter Duty per NEMA MG-1 Part 31 at 1.0 Service Factor|Shaft Grounding Ring|Upper Insulated Bearing 400 Frame & Up|NRR = Non-Reverse Ratchet, SRC = Self-Release Coupling|A member of the ACCU-SERIES® family of variable speed products