Replacing an industrial motor is primarily a matching decision: horsepower, frame, voltage, phase, speed, and enclosure all need to suit the equipment. Here, the choice is especially clear. The Dayton 15 HP Industrial Electric Motor targets substantially larger-duty applications with a 254T frame, while the 3 HP 3 Phase Electric Motor is built around an 182T frame and lower output requirement.
Quick verdict
Choose the Dayton 15 HP Industrial Electric Motor 230/460V 3-Phase TEFC 1770 RPM Frame 254T when the application calls for 15 HP and a 254T frame. Its description specifically positions it for equipment such as pumps, compressors, conveyors, fans, and blowers, and it carries a continuous-duty designation.
Choose the 3 HP 3 Phase Electric Motor 1800 RPM 182T Frame 230/460V TEFC Premium Efficiency when your equipment is matched to a 3 HP, 182T-frame motor. At USD 363.99 rather than USD 1,500.00, it is the lower-listed-price option, but it is not a like-for-like substitute for the Dayton's 15 HP output and larger frame.
Key differences at a glance
| Specification | Dayton 15 HP Industrial Electric Motor | 3 HP 3 Phase Electric Motor |
|---|---|---|
| Listed price | USD 1,500.00 | USD 363.99 |
| Rated output | 15 HP | 3 HP |
| Frame | 254T | 182T |
| Speed | 1770 RPM | 1800 RPM |
| Electrical setup | 230/460 VAC, three phase, 60 Hz | 230/460V, three phase, 60 Hz |
| Enclosure | TEFC | TEFC / IP55 |
| Duty or service factor | Continuous duty; service factor 1 | Service factor 1.25 |
Both choices use a totally enclosed fan-cooled enclosure and share 230/460V, three-phase, 60 Hz electrical specifications. That common ground makes the physical and output requirements-not simply the electrical supply-the main divide.
Where each motor fits best
The Dayton's advantage is scale. A 15 HP rating and 254T frame make it the relevant choice for machinery built around those requirements. Its foot-mounted configuration and induction/asynchronous motor type further describe a conventional industrial motor setup. The listed 1770 RPM speed is close to the 3 HP motor's 1800 RPM figure, but horsepower and frame are the more decisive distinctions between these two options.
The 3 HP motor is the focused choice for a 3 HP, 182T-frame replacement application. It is base-mounted, has a keyed shaft, and is described as a direct replacement. Its title also identifies premium efficiency, while its description gives a 1.25 service factor. Those details may matter when they align with the motor being replaced; they do not make the 3 HP motor an alternative for a 15 HP, 254T-frame need.
Product notes
Dayton 15 HP Industrial Electric Motor 230/460V 3-Phase TEFC 1770 RPM Frame 254T
Pick the Dayton when your industrial equipment requires the combination of 15 HP, a 254T frame, and 230/460 VAC three-phase power. The continuous-duty designation and TEFC enclosure suit the motor's stated role in pumps, compressors, conveyors, fans, blowers, and other general-purpose equipment. At 1770 RPM, it is positioned near the speed range of the 3 HP alternative, but with far greater rated output. The limitation is that it is identified as new open box rather than standard new packaging, and the description notes that it does not include the original manufacturer's packaging. Its USD 1,500.00 listed price also places it at the upper end of this two-motor comparison.
3 HP 3 Phase Electric Motor 1800 RPM 182T Frame 230/460V TEFC Premium Efficiency
The 3 HP motor makes sense for equipment built for a 3 HP, 182T-frame, base-mounted motor. Its 230/460V three-phase setup, 1800 RPM rating, TEFC / IP55 enclosure, Class F insulation, and keyed shaft create a specific replacement-oriented profile. The 1.25 service factor is another stated specification for shoppers comparing motors within this output class. Its concrete limitation is capacity: the 3 HP rating and 182T frame place it in a different application range from the Dayton's 15 HP and 254T specifications. Select it for the smaller matched requirement, not as a lower-priced stand-in for the larger Dayton motor.
Final choice by use case
For a 15 HP, 254T-frame industrial installation-especially one involving the pump, compressor, conveyor, fan, or blower applications named for it-choose the Dayton 15 HP Industrial Electric Motor. For a 3 HP, 182T-frame direct-replacement-style application with a keyed shaft and base mount, choose the 3 HP 3 Phase Electric Motor. The USD 363.99 to USD 1,500.00 price spread reflects two distinct motor sizes rather than two interchangeable versions of the same requirement.
