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Small cylindrical HVAC motor with stud mounting and totally enclosed housing

FASCO

FASCO D534 HVAC 3.3 In Motor 1/35-1/110 HP 115V CW fan accessory

SKU CH-N4RQ-5HCAN

A two-speed shaded-pole motor delivers 1/35 hp and 1/110 hp at 115 V AC for HVAC fan replacements

  • typeClosed Base
  • OEM replacement motor fits existing HVAC units
  • Two-speed operation delivers 500 RPM nameplate speed
  • 115 V AC shaded-pole design runs on standard power
  • Totally enclosed air-over enclosure protects internal components
  • Auto thermal protection with Class B insulation prevents overheating

OEM Replacement Motor

The FASCO D534 is a shaded-pole single-phase motor designed as an OEM replacement for HVAC equipment. It delivers two-speed operation at 1/35 hp and 1/110 hp with a nameplate speed of 500 RPM and 20 W output.

Voltage and Mounting Checks

Confirm the supply is 115 V AC at 60 Hz; the motor is not usable at 200 V or 208 V. Verify the stud mounting pattern and 3.3 frame dimensions match the original unit, and ensure clockwise shaft rotation viewed from the shaft end suits the fan blade.

Suited for Direct HVAC Swaps

This motor suits technicians replacing an identical shaded-pole unit in residential or light-commercial air-handling gear. It will not suit applications requiring variable-speed control, higher horsepower, or operation above 40 °C ambient.

Highlights

  • OEM replacement motor fits existing HVAC units
  • Two-speed operation delivers 500 RPM nameplate speed
  • 115 V AC shaded-pole design runs on standard power
  • Totally enclosed air-over enclosure protects internal components
  • Auto thermal protection with Class B insulation prevents overheating

Specifications

BrandFASCO
typeClosed Base

Questions about this item

Does the FASCO D534 motor come with a fan blade or mounting hardware, or must they be purchased separately?

The listing describes only the motor itself — a 3.3 frame, 115 V shaded-pole unit with 20 W output and 500 RPM nameplate speed. No blade, capacitor, or mounting brackets are mentioned, so plan to source those separately.

The spec shows two horsepower ratings, 1/35 hp and 1/110 hp — which one should I match to my application?

The motor delivers two speeds: the higher speed develops 1/35 hp at 1.5 A, while the lower speed produces 1/110 hp at 0.50 A. Choose the speed — and therefore the horsepower — that matches the airflow and load your equipment requires.

What does the 500 RPM nameplate speed mean once the motor is installed in my HVAC unit?

At the high-speed tap the shaft turns at approximately 500 RPM under full load (1.5 A, 20 W). The low-speed tap runs slower at 0.50 A. Actual speed will vary slightly with supply voltage and the fan blade's inertia, but 500 RPM is the rated reference point.

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