Marathon H504A 350 HP, 1785 RPM three-phase explosion proof motor with 447/449T NEMA frame and Explosion Proof Fan Cooled (XPFC) enclosure. Operates on 460V at 60 Hz with 1.00 service factor. UL listed for Class I Division 1 Groups C and D hazardous locations.

Marathon® AC Motor, 4-Pole Continuous-Duty, Explosion Proof AC Motors, Severe Duty Motors Special Features, 350 hp, 460 VAC, 395 A, 60 Hz Frequency, 3 ph ph, 1785 rpm Speed, 1 Speed, EPFC Enclosure, 447/449T Frame, 3.38 in Dia x 8.76 in L Shaft, Reversible Rotation, 1 Service Factor, Ball Bearing, 1290 ft-lb Torque, Rigid Base Mounting, 40 deg C, Insulation Class: Class F, Cast Iron, 2:1 Constant Torque Speed, 10:1 Variable Torque Speed, 51.85 in L x 39.01 in W x 24.16 in H Dimensions

Features:

• Bearing Current Protection (BCP)
• Blue Chip® motor quality, 100% cast iron construction for rigidity and reduced vibration
• Internal and external surfaces treated with epoxy paint
• Precision balanced to 0.08 in/sec
• Extended grease tubes
• Normally closed thermostats (must be connected to control circuit)
• Meets temperature code T3B
• Shaft slinger
• Horizontal motor orientation
• Squirrel cage inverter rated

Specs:

• Variable Torque Speed Range: 10:1
• Constant Torque Speed Range: 2:1
• Service Factor: 1
• Special Features: Explosion Proof AC Motors, Severe Duty Motors
• Insulation Class: Class F
• Shaft Size: 3.38 in Dia x 8.76 in L
• Torque Rating: 1290 ft-lb
• Phase: 3 ph
• Horsepower: 350 hp
• Number of Speeds: 1
• Rotation: Reversible
• Frame: 447/449T
• Bearing Type: Ball
• Temperature Rating: 40 deg C
• Enclosure Type: EPFC
• Speed: 1785 rpm
• Frequency Rating: 60 Hz
• Mounting Type: Rigid Base
• Amperage Rating: 395 A
• Voltage Rating: 460 VAC
• Dimensions: 51.85 in L x 39.01 in W x 24.16 in H
• Material: Cast Iron
• Type: 4-Pole Continuous-Duty