Marathon
Marathon R428B - 7 1/2-5.5 HP, TEFC, Frame 132S
Model: R428B
Marathon R428B motor — 7 1/2-5.5 HP, 3-phase, 480 V, 1800/1500 RPM, 132S frame, TEFC, 91.7% efficiency.
Technical Specifications
| Horsepower (HP) | 7 1/2-5.5 |
| Frame Size | 132S |
| Enclosure | TEFC |
| Full Load Speed (RPM) | 1800/1500 |
| Voltage | 480 |
| Phase | 3 |
| Full Load Amps (A) | 7.9 |
| Weight (lbs) | 92 |
| Category | General Purpose |
| Electrical Type | AC Induction |
| Rotation | CW/CCW |
| Frequency | 60 |
| Efficiency (%) | 91.7 |
| 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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