Marathon E485A 20 HP, 1800 RPM three-phase general purpose motor with NEMA 256T frame and Totally Enclosed Fan Cooled enclosure. Operates on 230/460V at 60 Hz with 1.15 service factor. Designed for continuous industrial duty applications.

Marathon® Severe Duty Motor, 4-Pole Squirrel Cage Inverter Rated, Special Features: Severe Duty Motors, 20 hp, 230/460 V, 48.5/24.2 A, 60 Hz, 3 ph, 1768 rpm, 1 Speed, IP55 Totally Enclosed Fan Cooled, 256T Frame, 1.626 in Dia Shaft, Reversible, Service Factor: 1.15, Ball Bearing, Rigid Mount, 40 deg C, Insulation Class: Class H, Cast Iron, 25.89 in L x 19.64 in W x 15.22 in H

Features:

• Meets or exceeds NEMA Premium® efficiency
• 100% cast iron construction for rigidity and reduced vibration
• MAX GUARD® class H insulation system
• Constant torque for inverter duty
• Sintered bronze breather with brass drain and breather
• Bearing caps and precision balanced to 0.08 in/s
• 1.15 service factor on sinewave and 1 service factor on IGBT power
• Internal and external epoxy painted

Specs:

• Service Factor: 1.15
• Special Features: Severe Duty Motors
• Insulation Class: Class H
• Shaft Size: 1.626 in Dia
• Phase: 3 ph
• Horsepower: 20 hp
• Number of Speeds: 1
• Rotation: Reversible
• Frame: 256T
• Bearing Type: Ball
• Temperature Rating: 40 deg C
• Enclosure Type: IP55 Totally Enclosed Fan Cooled
• Speed: 1768 rpm
• Frequency Rating: 60 Hz
• Mounting Type: Rigid
• Amperage Rating: 48.5/24.2 A
• Voltage Rating: 230/460 V
• Dimensions: 25.89 in L x 19.64 in W x 15.22 in H
• Material: Cast Iron
• Type: 4-Pole Squirrel Cage Inverter Rated