Between a 5HP air compressor motor and a 3/4HP general-purpose industrial motor, the right choice comes down to the machine you're powering. One is built to move a compressor head with 5 horsepower and a sealed, fan-cooled housing. The other is a smaller, lower-cost motor that draws less current and fits lighter shop equipment. If you need serious compressor output, the 5HP TEFC motor points the way. If your load is modest and the purchase price matters, the Baldor-Reliance RL1324A is the practical direction.
Quick verdict
For 5HP air compressor duty, the 5HP Air Compressor Electric Motor 184T TEFC is the obvious choice: it has the power, the 1750 RPM speed, and a totally enclosed fan-cooled enclosure for dusty compressor rooms. For lighter 3/4HP industrial tasks on a tighter budget, the Baldor-Reliance RL1324A is the better pick: it costs $174.99 less and pulls lower full-load amps.
Comparison table
| Feature | 5HP Air Compressor Motor | Baldor-Reliance RL1324A |
|---|---|---|
| Listed price | USD 449.99 | USD 275.00 |
| Horsepower | 5 HP | 3/4 HP |
| Base RPM | 1750 | 1725 |
| Enclosure type | TEFC (Totally Enclosed Fan Cooled) | Open |
| Full load amps | 28.5-27A | 10/5A |
| AC phase | Single phase | Single phase |
| AC frequency | 60 Hz | 60 Hz |
Where each product wins
Where the 5HP motor wins
The mek TEFC motor is the only one in this comparison with enough muscle for real air compressor work. It is designed for single-stage and two-stage air compressors, and the TEFC enclosure keeps debris from reaching the windings. The 184T frame and 1750 RPM output create a steady, high-torque package for sustained compression.
Where the Baldor wins
The Baldor-Reliance RL1324A wins on cost, current draw, and flexibility for lighter equipment. At 3/4HP, 1725 RPM, and 10/5 full-load amps, it is a better match for small machines when you don't need the big motor. Its open enclosure is fine in cleaner shops, and the continuous-duty rating suits longer running periods.
Product notes
5HP Air Compressor Electric Motor 184T TEFC 208-230V
The 5HP TEFC motor is the high-capacity pick in this pair. It spins at 1750 RPM, draws 28.5-27 full-load amps, and its totally enclosed fan-cooled housing helps keep dust away from the motor's internals while still moving cooling air. It is designed for single-stage and two-stage air compressors, making it the obvious match when a compressor head needs serious torque. The main limitation is the higher listed price relative to the Baldor. If you're only driving a light load, that extra capacity is money spent on power you won't use. Choose it when the job demands 5HP and the protection of a sealed enclosure.
Baldor-Reliance RL1324A
This Baldor-Reliance is a 3/4HP single-phase motor with a lower full-load amp draw (10/5A), a 1725 RPM output, and an open enclosure. Its continuous-duty rating supports long running times for lighter shop equipment. Being new open-box, it is offered at a lower price than the 5HP motor, which makes it attractive if your budget is tight and your power needs are modest. The limitation is the workload ceiling: 3/4HP and an open design will not satisfy a 5HP air compressor, and dusty shop air can be more of a concern with that open housing. Pick it when the machine you're powering is small and the purchase price is a primary factor.
Final choice by use case
If you are replacing a motor on a 5HP single-stage or two-stage air compressor and you need a sealed TEFC design, buy the 5HP Air Compressor Electric Motor 184T TEFC 208-230V. If the load is only 3/4HP and you want the lower-priced Baldor-Reliance RL1324A, that unit should serve lighter shop duty while drawing less current.
