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Dayton 1 HP three-phase motor in open drip-proof steel frame, rigid base mount, grey finish

Dayton

Dayton 2NKX3 3-Phase Motor 1 HP 143-5T/56HZ Frame

SKU CH-76V8-XE157

A 1 HP three-phase motor with open drip-proof enclosure, 1760 RPM, 230/460 V operation and 85.5% nominal efficiency for continuous-duty applications

  • 1 HP three-phase motor delivers 1760 RPM for steady industrial output
  • 230/460 V dual-voltage design fits common North American supply systems
  • 5 % nominal efficiency reduces energy cost during continuous duty cycles
  • Steel frame with ball bearings withstands 40 °C ambient conditions
  • CSA and UL certifications confirm compliance with recognised safety standards

General-Purpose Three-Phase Motor

The Dayton 2NKX3 is a 1 HP three-phase motor built for continuous-duty industrial applications. It fits a 143-5T/56HZ frame and operates on 230/460 V AC at 60/50 Hz. The unit is suited for equipment builders and maintenance teams needing a standard rigid-base motor with CSA and UL listings.

Thermal and Electrical Characteristics

The motor carries a Class F insulation rating and a 1.15 service factor for sustained operation. Nominal efficiency is 85.5 percent at a nameplate speed of 1760 RPM. Full-load current draws 3.1 A at 230 V and 1.60 A at 460 V, with a maximum ambient temperature of 40 °C. No dedicated thermal protection is fitted.

Open Drip-Proof Enclosure and Mounting

An open drip-proof enclosure allows airflow while guarding against falling liquids, making it appropriate for clean, dry indoor settings. The steel frame uses ball bearings and a rigid base for secure mounting. The shaft rotates in either direction, giving installers flexibility without extra accessories. Proposition 65 notices apply.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $441.99
Pricier than about 90% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameDAYTON

Questions about this item

How do I wire the 230/460 V three-phase supply to the terminal box, and which step is often missed?

Connect L1, L2, L3 to the nine leads per the low-voltage (230 V) or high-voltage (460 V) diagram on the nameplate; the step often missed is bridging the correct leads for the chosen voltage before powering up.

Which component will need replacement first under continuous duty at 40 °C ambient?

The ball bearings are the primary wear item; they require periodic relubrication and eventual replacement after extended continuous-duty operation.

What thermal limit stops the motor first during sustained full-load operation?

The insulation is rated Class F with a 40 °C maximum ambient; sustained overload beyond the 1.15 service factor will reach the winding temperature limit before any other protection activates.

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