Dayton
Dayton 30PT66 1/2 HP 1725 RPM 56H Frame Motor
Single-phase capacitor-start/run motor delivers 1/2 hp at 1,725 rpm with 115/230 V operation and 56H frame
- weight26
- typeClosed Base
- Capacitor-start/run design delivers reliable single-phase starting torque
- 1/2 HP at 1,725 RPM suits continuous-duty fan applications
- Dual-voltage 115/230 V AC with 5.0/2.6 A full-load current
- Open drip-proof enclosure and auto thermal protection for 40 °C ambient
- 56H frame with cradle base enables horizontal mounting
Motor identity and purpose
The Dayton 30PT66 is a single-phase capacitor-start/run motor rated at 1/2 hp and 1725 RPM on a 56H frame. It runs on 115/230V AC at 60 Hz with a 1.25 service factor and draws 5.0 or 2.6 amps at full load.
Ideal and non-ideal users
This motor suits equipment requiring continuous-duty, open drip-proof operation in ambient temperatures up to 40°C with automatic thermal protection. Builders needing an inverter-rated drive, a different mounting style, or a higher horsepower rating should consider other options.
Build integration
The cradle base and horizontal mounting position simplify installation on compatible equipment frames. Dual-voltage wiring frees the installer to match the supply without a transformer, while the 76.2 efficiency rating helps keep running costs predictable.
Highlights
- Capacitor-start/run design delivers reliable single-phase starting torque
- 1/2 HP at 1,725 RPM suits continuous-duty fan applications
- Dual-voltage 115/230 V AC with 5.0/2.6 A full-load current
- Open drip-proof enclosure and auto thermal protection for 40 °C ambient
- 56H frame with cradle base enables horizontal mounting
Specifications
| Brand | DAYTON |
|---|---|
| weight | 26 |
| type | Closed Base |
Questions about this item
What voltage supply and wiring does the 115/230 V AC motor need to run?
Wire the motor for either 115 V or 230 V single-phase AC; at full load it draws 5.0 A on 115 V or 2.6 A on 230 V.
Will the 56H frame and cradle base match the mounting holes on my existing fan housing?
The motor uses a standard NEMA 56H frame with a cradle base for horizontal mounting; verify your housing bolt pattern against the 56H dimensions before installing.
How can I confirm the motor is delivering its rated output after installation?
Measure running current — it should be near 5.0 A at 115 V or 2.6 A at 230 V — and check that shaft speed settles at 1,725 RPM under load.
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