Marathon
Marathon GT10138 - 250 HP, TEFC, Frame 449T
Model: GT10138
Marathon GT10138 motor — 250 HP, 3-phase, 460 V, 1200 RPM, 449T frame, TEFC, 95.8% efficiency, 1.15 SF.
Technical Specifications
| Horsepower (HP) | 250 |
| Frame Size | 449T |
| Enclosure | TEFC |
| Full Load Speed (RPM) | 1200 |
| Voltage | 460 |
| Phase | 3 |
| Full Load Amps (A) | 285 |
| Weight (lbs) | 2745 |
| IP Rating | IP55 |
| Category | General Purpose |
| Electrical Type | AC Induction |
| Rotation | CW/CCW |
| Frequency | 60 |
| Efficiency (%) | 95.8 |
| Service Factor | 1.15 |
| Duty Type | General Purpose |
| Shaft Diameter | 3.375 |
| Shaft Diameter Source | NEMA MG-1 frame table |
| Mounting Type | Foot Mounted |
| Mounting Type Source | Marathon 2026 Catalog p.42 |
| Ip Rating Source | Marathon catalog IP55 column flag (Y) |
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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