Dayton
Dayton 2NKX8 3-Phase Motor 1 1/2 HP 143-5T/56HZ Frame hvac control
A three-phase general-purpose motor delivers 1 1/2 HP at 1755 RPM in a 143-5T/56HZ frame with 86.5 percent nominal efficiency
- 1 1/2 HP output powers demanding HVAC loads
- 5 % nominal efficiency reduces energy consumption
- 208-230/460 V three-phase supply fits industrial panels
- Steel frame with ball bearings withstands continuous duty
- 40 °C max ambient suits harsh environments
Three-phase motor for HVAC systems
This Dayton 2NKX8 is a 1 1/2 HP three-phase motor built for general-purpose HVAC control applications. It operates on 208-230/460V AC at 60/50 Hz and fits a 143-5T/56HZ frame. The unit is suited for technicians and facilities managers needing reliable air-handling power.
Sustained-load behaviour and thermal limits
The totally enclosed fan-cooled enclosure supports continuous duty at a maximum ambient temperature of 40 degrees C. Insulation class F and a 1.25 service factor provide margin for prolonged operation, while nominal efficiency reaches 86.5 percent at 1755 RPM. No dedicated motor thermal protection is fitted, so external overload safeguards are required.
Steel frame, rigid base and dual-voltage wiring
A carbon-steel frame with ball bearings delivers mechanical durability for fixed installations. The rigid base mounting bolts directly to equipment pads without extra adapters. Dual-voltage terminal connections accept 208-230V or 460V three-phase supply, and the shaft rotates CW or CCW for flexible blower orientation.
Highlights
- 1 1/2 HP output powers demanding HVAC loads
- 5 % nominal efficiency reduces energy consumption
- 208-230/460 V three-phase supply fits industrial panels
- Steel frame with ball bearings withstands continuous duty
- 40 °C max ambient suits harsh environments
Specifications
| Brand | DAYTON |
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Questions about this item
How much heat does the 1 1/2 HP three-phase motor produce when running continuously at 40 °C ambient?
The motor is rated for continuous duty at a maximum ambient temperature of 40 °C with Class F insulation, and its nominal efficiency is 86.5 percent, so waste heat equals the difference between input power and the 1 1/2 HP mechanical output.
What voltage supply and mounting arrangement are required to install the 143-5T/56HZ frame motor?
The motor operates on 208-230/460 V AC at 60/50 Hz and uses a rigid base mounting with the 143-5T/56HZ frame dimensions.
Will the 1755 RPM motor couple directly to legacy 56-frame equipment without modification?
The 143-5T/56HZ frame combines 143-5T and 56HZ dimensions, so shaft height and keyway match legacy 56-frame mounts, allowing direct coupling in most cases.
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