Overview
The Marathon Electric 4051301 is a general-purpose three-phase induction motor rated at 1/2 horsepower and 60 Hz. Part of Marathon’s CWL frame family (NEMA 48T17T144B), this used unit is commonly found in pump, fan, and HVAC applications where reliable medium-duty performance is required. Marathon Electric has manufactured industrial motors since 1913, and this model reflects the company’s heritage of durability and efficiency across decades of industrial use.
Key Features
- 1/2 HP (0.5 kW) three-phase rated motor
- 60 Hz operation, NEMA 48 frame construction
- Drip-proof or TEAO enclosure typical for this series
- Suitable for pump, fan, blower, and general industrial duty
- Standard bell-mouth coupling or foot-mount options
Technical Specifications
| Specification | Value |
| Manufacturer | Marathon Electric |
| Model Number | 4051301 |
| Horsepower (HP) | 0.5 (1/2) |
| Frequency | 60 Hz |
| Phase | 3-Phase |
| Frame Type | CWL 48T17T144B (NEMA 48) |
| Condition | Used — Tested & Functional |
| Warranty | 60-Day Replacement Warranty |
Typical Applications
- Centrifugal and submersible pumps
- Fan and blower systems (HVAC, ventilation)
- Machine tool drives
- Industrial gearbox input motors
- Light-to-medium industrial duty cycles
Compatibility & Replacements
Compatible With
- Standard 3-phase 460V, 230V, or 208V power supplies (voltage confirmed on nameplate)
- NEMA-standard mounting footprints and frame dimensions
- Electric motor starters and soft-start controllers
- Centrifugal pump housings with bell-mouth or foot-mounted coupling interfaces
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or engineering team before ordering. Direct replacement compatibility depends on voltage rating, shaft size, and mounting configuration of the original equipment. Consult the equipment manufacturer’s documentation or contact our support team for confirmation.
Works With
- Standard 3-phase motor starters (NEMA, IEC)
- Variable frequency drives (VFDs) — consult motor nameplate for VFD capability
- Soft-start controllers and reduced-voltage starters
- Thermal overload relays and motor protection devices
- NEMA-standard bell housings and mounting adapters
