Dayton
Dayton 4THW4 3-Phase HVAC Control Motor 1/3 HP 56C 230/460V
Three-phase general-purpose motor delivers 1/3 HP at 1,140 RPM with dual-voltage 230/460 V AC operation and 56C frame mounting
- Three-phase power enables efficient industrial HVAC operation
- 1/3 HP output drives fans and pumps reliably
- 230/460 V dual voltage suits common supply systems
- 56C C-face frame allows direct coupling to equipment
- Totally enclosed fan-cooled design protects against dust and moisture
1/3 HP Three-Phase Motor for HVAC Systems
The Dayton 4THW4 is a general-purpose three-phase motor rated at 1/3 horsepower. It operates on 230/460V AC at 60 Hz with a nameplate speed of 1,140 RPM. A 56C frame and C-face mounting allow direct coupling to pumps, fans, or gearboxes in commercial HVAC equipment.
Replacing Single-Phase or Lower-Efficiency Units
This motor suits installations moving from single-phase power to three-phase supply where higher efficiency and continuous duty are required. Its 70 percent nominal efficiency and 1.15 service factor provide a measurable upgrade over shaded-pole or split-phase designs. The jump is worth it when the application demands cooler running temperatures and longer bearing life under constant load.
C-Face Mounting Simplifies Drive Integration
The steel-frame motor uses ball bearings and carries CE, CSA, and UL markings for code compliance. Full-load current draws 1.5 amps at 230V or 0.70 amps at 460V, so the starter and overloads must match those values. CW/CCW rotation is reversible by swapping any two supply leads, giving installers flexibility without extra hardware.
Highlights
- Three-phase power enables efficient industrial HVAC operation
- 1/3 HP output drives fans and pumps reliably
- 230/460 V dual voltage suits common supply systems
- 56C C-face frame allows direct coupling to equipment
- Totally enclosed fan-cooled design protects against dust and moisture
Specifications
| Brand | DAYTON |
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Questions about this item
What frame size and mounting face does the 56C motor use for installation?
The motor uses a NEMA 56C frame with a C-face mounting flange, allowing direct bolt-on to compatible gearboxes or pump housings.
How do I wire the dual-voltage 230/460V three-phase motor for the correct supply voltage?
Follow the connection diagram on the nameplate: configure the nine leads in parallel for 230V or in series for 460V, ensuring the rotation direction matches the CW/CCW requirement.
What bearing maintenance is expected for the ball-bearing motor running continuously at 40°C ambient?
The sealed ball bearings are lubricated for life; no re-greasing is required, but monitor vibration and temperature during continuous duty cycles.
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