Dayton
Dayton 3LU73BG HVAC Control Blower Motor 1/4 hp 115V 625 RPM 3 Speed
Single-phase blower motor delivers 1/4 hp at 625 RPM with three selectable speeds
- 1/4 hp motor powers HVAC blowers reliably
- Three-speed operation matches airflow to demand
- 115 V single-phase supply fits standard wiring
- Auto thermal protection prevents overheating damage
- Stud mount allows flexible all-angle installation
HVAC Blower Motor 1/4 hp
The Dayton 3LU73BG is a single-phase permanent split capacitor motor rated at 1/4 hp and 115V AC. It delivers three selectable speeds at a nameplate 625 RPM for HVAC air-handling applications. The 48YZ frame and 6-inch by 1/2-inch shaft suit direct-drive blower assemblies.
Continuous Duty Thermal Protection
Rated for continuous duty at up to 40 °C ambient, the motor draws 3.4 A at full load with a 1.0 service factor. Automatic thermal protection resets once the winding temperature falls, allowing sustained operation without manual intervention. Class B insulation supports the 60 Hz supply.
Open Air-Over Enclosure Limits
The open air-over enclosure requires airflow from the driven blower wheel for cooling; it is not suited for confined or non-ventilated spaces. Stud mounting allows all-angle installation, but shaft orientation must match the driven load. CW/CCW rotation is field-selectable to match the blower housing.
Highlights
- 1/4 hp motor powers HVAC blowers reliably
- Three-speed operation matches airflow to demand
- 115 V single-phase supply fits standard wiring
- Auto thermal protection prevents overheating damage
- Stud mount allows flexible all-angle installation
Specifications
| Brand | DAYTON |
|---|
Questions about this item
How much heat does the 3.4 A motor add when running continuously in a 40 °C space?
The motor is rated for continuous duty at up to 40 °C ambient with auto thermal protection and Class B insulation, so it will operate within its thermal limits under those conditions.
What power supply and mounting hardware are needed for the 115 V 48YZ frame motor?
You need a 115 V AC, 60 Hz single-phase supply capable of 3.4 A and stud-mount hardware compatible with a 48YZ frame for all-angle installation.
Will the 1/2 in shaft and CW/CCW rotation match my existing blower wheel and airflow direction?
The 1/2 in diameter, 6 in long shaft with reversible CW/CCW rotation fits standard blower wheels and lets you set airflow direction to match the original unit.
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