Dayton 5K281 GP Motor Split Phase 1/3 HP 1725 rpm 56Z
Split-phase motor delivers 1/3 HP at 1,725 rpm on 115 V AC for continuous duty
- 1/3 HP split-phase motor drives HVAC equipment reliably
- 1,725 RPM single-speed operation matches fan and blower requirements
- 115 V AC, 60 Hz supply fits standard residential wiring
- Open drip-proof steel frame resists moisture and debris
- 56Z frame with flat shaft and rigid base simplifies mounting
General-purpose split-phase motor
The Dayton 5K281 is a single-phase, split-phase AC motor rated at 1/3 horsepower with a nameplate speed of 1,725 rpm. It operates on 115 V AC at 60 Hz and draws 7.0 A at full load. The 56Z frame uses a rigid base mount and a flat shaft design for direct coupling in HVAC and light-industrial equipment.
Thermal and electrical characteristics
Continuous duty is supported up to a maximum ambient temperature of 40 °C with a service factor of 1.35. The open drip-proof enclosure allows airflow through the steel frame while protecting internal windings from falling moisture. Insulation class B and the absence of built-in thermal protection mean external overload safeguards should be provided by the installer.
Included hardware and mounting
The motor ships as a bare unit with a rigid steel base ready for bolt-down installation. Clockwise or counter-clockwise rotation is selectable during wiring, so no additional accessories are required to change direction. No software, controllers or mounting brackets are bundled with the motor.
How it compares
Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.
- Price $147.99
- Pricier than about 76% of the 1,762 comparable items (median $45.99).
Specifications
| Product | |
|---|---|
| Brand name | DAYTON |
Questions about this item
How do I mount the 56Z frame motor and which way does the flat shaft turn?
Bolt the steel rigid-base frame to a flat surface; the flat shaft rotates CW or CCW depending on how you wire the 115 V split-phase windings.
What part of this 1/3 HP motor will need attention first during continuous duty?
The open drip-proof enclosure exposes the windings to dust and moisture, so plan to clean or re-insulate the Class B insulation when debris builds up.
At what point does the 1.35 service factor stop protecting the motor under sustained load?
Drawing more than 7.0 A at 1725 rpm exceeds the service-factor margin, causing the winding temperature to surpass the 40 °C ambient rating.
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