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FASCO D721 1/4 HP 115V direct drive blower motor

FASCO

FASCO D721 1/4 HP 115V Direct Drive Blower Motor

SKU CH-8BQ3-6HEZ0

Direct-drive blower motor delivers 1/4 HP at 115 V with three-speed PSC operation and auto thermal protection

  • typeMotors
  • Three-speed control for tailored airflow
  • 1/4 HP permanent split capacitor motor delivers 190 W output
  • Auto thermal protection with Class B insulation for continuous duty
  • Reversible CW/CCW rotation suits multiple installations
  • 115 V single-phase design runs on standard household power

Motor purpose and fit

The FASCO D721 is a direct-drive blower motor rated at 1/4 hp for 115 V single-phase supply. It suits residential ceiling-fan installations that need a permanent-split-capacitor design with three-speed operation. Builders requiring a different voltage or a higher horsepower rating should look elsewhere.

Thermals noise and power

The motor draws between 2.6 A and 4.8 A depending on the selected speed and delivers 190 W output at 1075 RPM. Auto thermal protection and Class B insulation allow continuous duty in ambient temperatures up to 40 degrees Celsius. The open air-over enclosure relies on the fan airflow for cooling, so mounted noise will follow the fan design.

Build integration

A 48 frame size and reversible CW/CCW rotation simplify mounting in standard ceiling-fan housings. The motor operates at 60 Hz and is not usable at 200 V or 208 V, so the circuit must supply 115 V. No capacitor is mentioned in the data, so verify whether the existing fan kit includes one or source a compatible run capacitor separately.

Highlights

  • Three-speed control for tailored airflow
  • 1/4 HP permanent split capacitor motor delivers 190 W output
  • Auto thermal protection with Class B insulation for continuous duty
  • Reversible CW/CCW rotation suits multiple installations
  • 115 V single-phase design runs on standard household power

Specifications

BrandFASCO
typeMotors

Questions about this item

How is the 48-frame motor mounted and which wiring step is most often missed?

The motor uses a standard 48-frame mount with open air-over enclosure. The step most often missed is connecting the permanent split capacitor required for single-phase operation.

What maintenance will the auto thermal protection and Class B insulation require over time?

Keep the open air-over vents clear of dust so the auto thermal protection does not trip. Class B insulation is rated for 40 °C ambient; no lubrication is needed on the direct-drive shaft.

At what point does the 190 W output limit appear during continuous duty?

The 190 W output is the continuous maximum at 1075 RPM. Sustained loads above this level will cause the auto thermal protection to cycle the motor off.

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