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Marathon

Marathon U881B - 150 HP, TEFC, Frame 445T

Model: U881B

Marathon U881B motor — 150 HP, 3-phase, 460 V, 1800 RPM, 445T frame, TEFC, 95.8% efficiency.

Technical Specifications

Horsepower (HP)150
Frame Size445T
EnclosureTEFC
Full Load Speed (RPM)1800
Voltage460
Phase3
Full Load Amps (A)169
Weight (lbs)1994
CategorySevere Duty
Electrical TypeAC Induction
RotationCW/CCW
Frequency60
Efficiency (%)95.8
Duty TypeSevere Duty
Shaft Diameter3.375
Shaft Diameter SourceNEMA MG-1 frame table

Manufacturer

Marathon

A Regal Rexnord brand manufacturing industrial-grade electric motors. Known for Blue Chip XRI, Black Max, and severe duty product lines.

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