Dayton
Dayton 31LH66 1 HP 56HC Frame 230/460V AC Three-Phase Motor
Three-phase general-purpose motor delivering 1 HP at 1760 RPM in a 56HC frame with 230/460 V dual voltage and 83.5 % nominal efficiency
- 1 HP three-phase power drives demanding HVAC applications
- 230/460 V dual-voltage input suits diverse supply systems
- 5 % nominal efficiency reduces energy consumption
- 56HC frame with C-face mounting fits standard equipment
- Steel frame and ball bearings withstand continuous 40 °C operation
Industrial three-phase motor for continuous duty
The Dayton 31LH66 is a 1 HP general-purpose motor built on a 56HC frame with C-face mounting and rigid base. It operates on 230/460V AC three-phase power at 60 Hz and carries CSA and UL listings for industrial compliance.
Sustained operation at 83.5 percent nominal
With a service factor of 1.15 and continuous-duty rating, the motor maintains its 1760 RPM nameplate speed under full load. Full-load current draws 3.1 A at 230 V or 1.6 A at 460 V, and Class F insulation supports ambient temperatures up to 40 °C without thermal protection.
Voltage and frame constraints define integration
Dual-voltage windings allow wiring for either 230 V or 460 V supplies, but the fixed 56HC frame and C-face pattern limit mounting compatibility. The steel frame and ball bearings suit indoor, non-hazardous environments where the 1701-1800 RPM operating range matches the driven equipment.
Highlights
- 1 HP three-phase power drives demanding HVAC applications
- 230/460 V dual-voltage input suits diverse supply systems
- 5 % nominal efficiency reduces energy consumption
- 56HC frame with C-face mounting fits standard equipment
- Steel frame and ball bearings withstand continuous 40 °C operation
Specifications
| Brand | DAYTON |
|---|
Questions about this item
How hot does the 56HC frame motor get when running continuously at 1760 RPM in a 40°C ambient?
The motor is rated for continuous duty with Class F insulation and a maximum ambient temperature of 40°C, so winding temperature rise stays within design limits during all-day operation.
What three-phase supply and starter gear are needed to run this 230/460V AC motor at 3.1/1.6 A full-load current?
You need a 230 V or 460 V three-phase 60 Hz supply, a matching three-pole contactor and overload relay set to 3.1 A at 230 V or 1.6 A at 460 V, plus rigid-base mounting hardware for the 56HC frame.
Will the 56HC C-face and 1.15 service factor let this motor replace an older 56-frame unit on existing driven equipment?
The 56HC frame keeps the standard 56 shaft height while adding a C-face mount, and the 1.15 service factor provides margin for the same 1 HP load on legacy pumps or fans.
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