Marathon
Marathon U1131A - 250 HP, Dripproof, Frame 445TS
Model: U1131A
Marathon U1131A motor — 250 HP, 3-phase, 575 V, 1800 RPM, 445TS frame, ODP, 95.4% efficiency.
Technical Specifications
| Horsepower (HP) | 250 |
| Frame Size | 445TS |
| Enclosure | ODP |
| Full Load Speed (RPM) | 1800 |
| Voltage | 575 |
| Phase | 3 |
| Full Load Amps (A) | 223 |
| Weight (lbs) | 2262 |
| Category | Pump Motors |
| Electrical Type | AC Induction |
| Rotation | CW/CCW |
| Frequency | 60 |
| Efficiency (%) | 95.4 |
| Shaft Diameter | 3.375 |
| Shaft Diameter Source | NEMA MG-1 frame table |
| Mounting Type | Foot Mounted |
| Mounting Type Source | Marathon 2026 Catalog p.119 |
| 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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