When you strip it down, this is a two-way choice between a 2 HP three-phase TEFC motor and a 5 HP single-phase air compressor motor. The deciding factors are your electrical supply, your required horsepower, and the frame style your equipment is built around.
Quick Verdict
If your shop has three-phase power and you need a compact, fully enclosed 2 HP motor, the 56C TEFC motor is the practical pick. If you are replacing a 5 HP air compressor motor on a 208-230V single-phase circuit, the 184T frame compressor motor is built for exactly that job.
Side-by-Side Comparison
| Feature | 2 HP 3-Phase 56C TEFC | 5 HP Single-Phase 184T |
|---|---|---|
| Price | $175.10 | $455.00 |
| Horsepower | 2 HP | 5 HP |
| Phase | Three phase | Single phase |
| Voltage | 230/460V | 208-230V |
| Frame | 56C | 184T |
| Enclosure | TEFC | ODTF |
| Condition | New | New |
| Notable extras | Inverter-rated, premium efficiency, C-face removable base | Direct replacement fitment, 2-year manufacturer warranty, steel construction |
Where the 2 HP Motor Wins
- It costs less and works on industrial three-phase power.
- The TEFC enclosure offers better protection in dusty or dirty environments.
- Inverter-rated design gives you flexibility with variable-speed drives.
- The 56C C-face frame with removable base suits compact mounting.
Where the 5 HP Air Compressor Motor Wins
- It delivers 5 HP, so it can drive a heavier air compressor load.
- Single-phase 208-230V wiring is easier to feed in many small shops.
- The 184T frame and direct replacement fitment are aimed at compressor swaps.
- It adds a 2-year manufacturer warranty and steel construction.
Product Notes
2 HP 3-Phase 56C TEFC Motor
This 2 HP motor is the lower-priced way into three-phase industrial duty. Its totally enclosed fan-cooled body helps it run in areas with dust or debris, while the inverter-rated, premium-efficiency design means it can handle variable-speed drive work. The 56C frame includes a C-face and a removable base, which gives you more flexibility when fitting it into a machine. The trade-off is power: at 2 HP, it cannot match the 5 HP output of the compressor motor. It is also designed for three-phase supply, so it is not the right fit for a single-phase circuit. If your application only needs 2 HP and you have the right phase, this is the cleaner match.
5 HP Single-Phase Air Compressor Motor
This 5 HP motor is the higher-output option for an industrial air compressor. It uses a single-phase 208-230V connection, which many compressor setups use, and comes in a 184T frame with direct replacement fitment, making it a natural fit for swapping into existing compressor hardware. The 28.5-27.0 A amperage rating and steel construction are useful facts when sizing the circuit and expecting long service. It also backs that duty with a 2-year manufacturer warranty. The limitation is in the enclosure: the ODTF style is not the same sealed TEFC construction as the 2 HP motor, so it is not your first choice for especially dirty or dusty locations. And at 5 HP, you are buying more power than a 2 HP compressor would ever need.
Final Choice by Use Case
Choose the 2 HP 3-Phase 56C TEFC motor when you have three-phase power, need a compact sealed motor, and want inverter-rated flexibility at a lower investment. Choose the 5 HP Single-Phase 184T motor when your compressor runs on single-phase, needs 5 HP, and you want a direct replacement with manufacturer warranty support.
