Description

Marathon® Black Max® AC Motor, 4-Pole Continuous-Duty, Inverter Ready Special Features, 20 hp, 575 VAC, 20.8 A, 60 Hz Frequency, 3 ph ph, 1770 rpm Speed, 1 Speed, Totally Enclosed Nonvented (TENV) Enclosure, 256TC Frame, 1.63 in Dia x 3.75 in L Shaft, Reversible Rotation, 1 Service Factor, Ball Bearing, 120 ft-lb Torque, Rigid Base Mounting, 40 deg C, Insulation Class: Class F, Cast Iron, 1000:1 Constant Torque Speed, 27.13 in L x 17.97 in W x 16.53 in H Dimensions

Features:

• Constant torque operation from 0 to base speed on vector drive
• Normally closed thermostats (must be connected to control circuit)
• Horizontal motor orientation
• Optimized for operation with IGBT inverter (NEMA Design A)
• Encoder and brake provisions included on opposite drive end (maximum 10 lb-ft brake,see Modifications and/or Accessory Kits sections)
• Premium efficiency promotes improved reliability
• Heavy-duty, rolled steel construction ensures motor durability
• Permanently lubricated sealed bearings extend the lifetime of the motor

Applications:

Material Handling, Machine Tools, Conveyors, Crane and Hoist, Metal Processing, Test Stands, Pumps, Compressors, Textile Processing and Other Industrial Machinery

Standards/Approval:

• CE
• CSA Certified
• UL Listed

Amperage Rating	20.8 A
Bearing Type	Ball
Constant Torque Speed Range	1000:1
Dimensions	27.13 in L x 17.97 in W x 16.53 in H
Enclosure Type	Totally Enclosed Nonvented (TENV)
Frame	256TC
Frequency Rating	60 Hz
Horsepower	20 hp
Insulation Class	Class F
Material	Cast Iron
Mounting Type	Rigid Base
Number of Speeds	1
Phase	3
Rotation	Reversible
Service Factor	1
Shaft Size	1.63 in Dia x 3.75 in L
Special Features	Inverter Ready
Manufacturer	LEESON ELECTRIC CORPORATION