Dayton
Dayton 2NKX5 3-Phase Motor 1 HP 143-5T/56HZ Frame 230/460V hvac control
Three-phase general-purpose motor delivers 1 HP at 1165 RPM with 230/460 V dual-voltage operation and 82.5 % nominal efficiency
- Delivers 1 HP power for demanding HVAC applications
- Dual 230/460V voltage suits varied electrical supplies
- 5 percent nominal efficiency reduces energy consumption
- 15 service factor handles temporary overload conditions
- 1165 RPM at 60 Hz matches standard HVAC speeds
Industrial HVAC Motor for Commercial Systems
The Dayton 2NKX5 is a three-phase general purpose motor rated at 1 HP with a 143-5T/56HZ frame. It operates on 230/460V AC at 60/50 Hz and suits HVAC control applications in commercial and industrial settings.
Thermal Performance and Electrical Draw
The open drip proof enclosure relies on ambient airflow for cooling with a maximum ambient temperature of 40 degrees C. Insulation class F and a service factor of 1.15 support continuous duty, while full load current measures 4.0 A at 230V and 2.0 A at 460V.
Replacement Upgrade for Legacy Units
This motor replaces worn three-phase units in rigid base mounts where 1165 RPM and 82.5 percent nominal efficiency match the original nameplate. The jump is worth it when thermal protection is handled externally and ball bearing longevity is required for continuous operation.
Highlights
- Delivers 1 HP power for demanding HVAC applications
- Dual 230/460V voltage suits varied electrical supplies
- 5 percent nominal efficiency reduces energy consumption
- 15 service factor handles temporary overload conditions
- 1165 RPM at 60 Hz matches standard HVAC speeds
Specifications
| Brand | DAYTON |
|---|
Questions about this item
How do I mount and wire the 143-5T/56HZ frame motor for 230 V or 460 V three-phase supply?
Bolt the rigid steel base to a flat surface, align the shaft, then connect the nine leads for 230 V (4.0 A) or 460 V (2.0 A) per the nameplate diagram; the step often missed is verifying rotation direction before coupling the load.
Which parts of this 1 HP motor will need inspection or replacement over its service life?
The ball bearings are the primary wear item; plan to relubricate or replace them at regular intervals, and check the steel frame and shaft for corrosion if the ambient temperature regularly approaches 40 °C.
What is the first performance limit reached when the motor runs continuously at full load?
The 1.15 service factor allows only a 15 % overload margin, so sustained operation above 1 HP will hit the thermal limit of the Class F insulation before any mechanical limit is reached.
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