Marathon
Marathon W641A - 150 HP, TEFC, Frame 445T
Model: W641A
Marathon W641A motor — 150 HP, 3-phase, 575 V, 1800 RPM, 445T frame, TEFC, 95.8% efficiency.
Technical Specifications
| Horsepower (HP) | 150 |
| Frame Size | 445T |
| Enclosure | TEFC |
| Full Load Speed (RPM) | 1800 |
| Voltage | 575 |
| Phase | 3 |
| Full Load Amps (A) | 135 |
| Weight (lbs) | 1900 |
| Category | Severe Duty |
| Electrical Type | AC Induction |
| Rotation | CW/CCW |
| Frequency | 60 |
| Efficiency (%) | 95.8 |
| Shaft Diameter | 3.375 |
| Shaft Diameter Source | NEMA MG-1 frame table |
| Mounting Type | Foot Mounted |
| Mounting Type Source | Marathon 2026 Catalog p.59 |
| Duty Type | General Purpose |
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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