Marathon
Marathon M921B - 100 HP, Dripproof, Frame 405HPV
Model: M921B
Marathon M921B motor — 100 HP, 3-phase, 230/460 V, 1800 RPM, 405HPV frame, ODP, 95.4% efficiency.
Technical Specifications
| Horsepower (HP) | 100 |
| Frame Size | 405HPV |
| Enclosure | ODP |
| Full Load Speed (RPM) | 1800 |
| Voltage | 230/460 |
| Phase | 3 |
| Full Load Amps (A) | 226/113 |
| Weight (lbs) | 1449 |
| Category | Pump Motors |
| Electrical Type | AC Induction |
| Rotation | CW/CCW |
| Frequency | 60 |
| Efficiency (%) | 95.4 |
| Shaft Diameter | 2.875 |
| Shaft Diameter Source | NEMA MG-1 frame table |
| Mounting Type | Vertical Solid Shaft |
| Mounting Type Source | Marathon 2026 Catalog p.125 |
| 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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