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Small cylindrical HVAC motor with open vents and mounting studs

Dayton

Dayton 71903582M 1/20 HP HVAC motor 115V 1550 rpm 3.3 frame

SKU CH-VCBY-NH15F

Single-phase permanent split capacitor motor delivers 1/20 hp at 1550 rpm on 115 V AC with 0.8 A full-load current and 3.3 frame mounting

  • typeClosed Base
  • 1/20 HP output drives small HVAC fans
  • 115 V single-phase supply suits standard wiring
  • 1550 rpm nameplate speed matches common replacements
  • Auto thermal protection prevents overheating damage
  • Stud mounting allows direct bolt-on installation

Replacement HVAC motor for 115 V systems

This single-phase permanent split capacitor motor delivers 1/20 hp at 1550 rpm on a 115 V AC supply. It suits residential or light-commercial air-handling units that require a 3.3 frame open air-over design.

Stud mounting and continuous duty rating

The motor uses a stud mounting arrangement and carries a 1.0 service factor for continuous operation up to 40 °C ambient. Thermal protection is automatic and insulation meets Class B standards for reliable daily service.

Verify voltage and frame before ordering

Confirm the existing equipment runs on 115 V AC at 60 Hz; the unit is not usable at 200 V or 208 V. Ensure the 3.3 frame dimensions and shaft rotation flexibility match the original motor’s mounting pattern.

Highlights

  • 1/20 HP output drives small HVAC fans
  • 115 V single-phase supply suits standard wiring
  • 1550 rpm nameplate speed matches common replacements
  • Auto thermal protection prevents overheating damage
  • Stud mounting allows direct bolt-on installation

Specifications

BrandDAYTON
typeClosed Base

Questions about this item

Does the 115 V AC single-phase supply limit this motor to 1550 rpm?

The motor runs at 1550 rpm on 115 V AC, 60 Hz single-phase power; it is not usable at 200 V or 208 V.

What mounting clearance does the 3.3 frame and stud pattern require?

The 3.3 frame uses a stud mounting pattern; verify the stud spacing and shaft height against the replacement unit before installation.

How is the permanent-split-capacitor motor wired, and what step is often missed?

Connect the 115 V supply to the two main leads and the capacitor across the designated terminals; the common error is omitting the capacitor or reversing its leads.

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