We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small cylindrical HVAC motor, silver metal body with mounting studs visible

Dayton

Dayton 71633716M 1/40 HP 1550 rpm 115V 3.3 Frame HVAC Motor

SKU CH-RN9P-4Y64V

A 1/40 HP shaded-pole motor runs at 1550 rpm on 115 V AC for HVAC fan duty

  • typeClosed Base
  • 1/40 HP motor delivers 19 W output for light HVAC duties
  • 1550 rpm nameplate speed suits single-speed fan applications
  • 115 V AC supply with 1.1 A full-load current fits standard circuits
  • 3 frame size and stud mounting simplify direct replacement
  • Totally enclosed air-over design with auto thermal protection ensures continuous operation

Direct Replacement Motor

The Dayton 71633716M is a shaded-pole HVAC motor rated at 1/40 hp and 1550 rpm for 115V AC single-phase power. It fits a 3.3 frame with a totally enclosed air-over enclosure and stud mounting. Continuous duty cycle and Class B insulation suit standard residential or light commercial air-moving equipment.

Upgrade From Lower Output Models

This unit delivers 19 watts output at 1.1 amps full-load current, replacing motors with lower wattage or open enclosures. The jump is worth it when the application demands auto thermal protection and a closed-base design that resists dust and moisture. It is not usable at 200V or 208V, so voltage must match exactly.

60 Hz Fixed-Speed Limitation

The motor runs at a single speed of 1550 rpm nameplate on 60 Hz supply with no variable-speed capability. Shaded-pole design limits starting torque and efficiency compared to permanent-split-capacitor types. Buyers needing speed control, reversible rotation, or higher efficiency should specify a different motor technology.

Highlights

  • 1/40 HP motor delivers 19 W output for light HVAC duties
  • 1550 rpm nameplate speed suits single-speed fan applications
  • 115 V AC supply with 1.1 A full-load current fits standard circuits
  • 3 frame size and stud mounting simplify direct replacement
  • Totally enclosed air-over design with auto thermal protection ensures continuous operation

Specifications

BrandDAYTON
typeClosed Base

Questions about this item

What stud pattern does the 3.3 frame motor use for mounting?

The motor uses a stud mounting type on its 3.3 frame; match the stud spacing to your fan housing before installation.

Which wiring step is critical when connecting the 115V shaded-pole motor?

Verify rotation is CWSE from the shaft end and connect the single-phase leads to 115V AC only; the motor is not usable at 200V or 208V.

How often should the auto thermal protection be checked on this continuous-duty motor?

The auto thermal protection resets itself; inspect the totally enclosed air-over enclosure annually for lint buildup that could restrict cooling airflow.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.