Dayton
Dayton 30PT89 3/4 hp 3450 RPM 56 Frame HVAC Control
Single-phase capacitor-start/run motor delivering 3/4 hp at 3450 RPM in a 56 frame with 115/230 V operation and automatic thermal protection
- ColorTransparent
- 3/4 hp output powers demanding HVAC systems
- 3450 RPM nameplate speed delivers high airflow
- 115/230 V dual-voltage design fits varied supplies
- 56 frame with cradle base simplifies installation
- Auto thermal protection guards against overheating
Motor for HVAC systems
The Dayton 30PT89 is a single-phase general-purpose motor built for HVAC control applications. It delivers 3/4 hp at 3450 RPM in a 56 frame size, operating on 115/230V AC at 60 Hz. Capacitor-start/run design provides reliable starting torque for fan and blower duties.
Sustained operation characteristics
Continuous duty cycle and a 1.25 service factor allow the motor to handle prolonged loads without overheating. Automatic thermal protection and Class B insulation support safe running up to a 40 degrees C ambient temperature. Open drip-proof enclosure keeps contaminants out while permitting airflow.
Installation checklist
Verify that your supply voltage matches 115V or 230V and that the circuit can supply 7.0 or 3.6 full-load amps respectively. Confirm the cradle-base mounting fits a horizontal orientation and that the shaft rotates CW/CCW as required. This motor is not inverter rated.
Highlights
- 3/4 hp output powers demanding HVAC systems
- 3450 RPM nameplate speed delivers high airflow
- 115/230 V dual-voltage design fits varied supplies
- 56 frame with cradle base simplifies installation
- Auto thermal protection guards against overheating
Specifications
| Brand | DAYTON |
|---|---|
| Color | Transparent |
Questions about this item
How much heat does the 3/4 hp motor generate when running continuous duty at 3450 RPM?
The motor is rated for continuous duty with a maximum ambient temperature of 40 degrees C and Class B insulation, and it includes automatic thermal protection to limit temperature rise during all-day operation.
What voltage supply and wiring must I already have to install this 115/230 V capacitor-start/run motor?
You need a single-phase 115 V or 230 V AC supply at 60 Hz, wiring sized for 7.0 A at 115 V or 3.6 A at 230 V, and a compatible capacitor-start/run circuit for the motor to start and run correctly.
Will the 56 frame cradle-base mounting line up with the bolt pattern on my existing 56-frame HVAC blower housing?
Yes, the motor uses a standard NEMA 56 frame with cradle-base mounting in the horizontal position, so it matches the same bolt pattern and shaft height used on other 56-frame blower housings.
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