Details

Description

Marathon® AC Motor, 2-Pole Continuous-Duty Low Voltage, Explosion-Proof Motors Application, Squirrel Cage Inverter Rated Motors Special Features, 250 hp, 460 V AC, 270 A, 60 Hz Frequency, 3 ph, 3575 rpm Speed, 1 Speed, IP54, XPFC Enclosure, 449TS Frame, 2-3/8 in Dia x 5 in L Extension Shaft, Reversible Rotation, 1 Service Factor, Deep Groove Ball Bearing, 367 ft-lb Full Load Torque, Rigid Base Mounting, 40 deg C, Insulation Class: Class F, Cast Iron, 2:1 Constant Torque Speed, 10:1 Variable Torque Speed, 28.25 in L x 39.36 in W x 24.16 in H Dimensions

Features:

MAX GUARD® class F insulation system, internal and external epoxy paint
Blue Chip® quality, 100% cast iron construction for rigidity and reduced vibration
1.15 service factor on sinewave, 1 service factor on IGBT power
Precision balanced to 0.08 in/sec, extended grease tubes
Normally closed thermostats (must be connected to control circuit)
Shaft slinger
Rated 60/50 Hz, 190/380 or 380 V at next lower horsepower

Standards/Approval:

CSA Certified
UL Listed
Explosion-Proof Division 1 Class I, Groups C and D, Class II, Groups F and G
NEMA Premium® Efficiency
Temperature Code T3B
NEMA Design Code: B

Warranty:

12 months

Attributes/Specifications

Amperage Rating	270 A
Application Type	Explosion-Proof Motors
Bearing Type	Deep Groove Ball
Constant Torque Speed Range	2:1
Dimensions	28.25 in L x 39.36 in W x 24.16 in H
Enclosure Type	IP54, XPFC
Frame	449TS
Frequency Rating	60 Hz
Horsepower	250 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	2-3/8 in Dia x 5 in L Extension
Manufacturer	Marathon®