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Dayton 1 HP open drip-proof motor with C-face rigid base

Dayton

Dayton 4K811 GP Motor 1 HP 1730 rpm 145TC

SKU CH-DP83-TRN9M

Single-phase capacitor-start motor delivers 1 hp at 1730 rpm in a 145TC C-face frame for continuous duty

  • Product typeClosed Base
  • 1 HP output drives demanding fan loads
  • 1730 rpm nameplate speed for consistent airflow
  • Dual-voltage 115/208-230 V fits common supplies
  • 145TC C-face rigid base simplifies mounting
  • 15 service factor handles continuous duty

General Purpose Motor for Fan Accessories

The Dayton 4K811 is a single-phase capacitor-start motor rated at 1 hp and 1730 rpm. It operates on 115/208-230V AC at 60 Hz with a 145TC frame and open drip-proof enclosure. Designed for continuous duty, it suits replacement or new-build fan accessory projects.

Upgrade from Lower Output or Worn Units

This motor replaces units with less than 1 hp output or those lacking a 1.15 service factor. The jump is worth it when the application demands continuous operation at up to 40 degrees C ambient and a rigid C-face mounting base. It also supports usable 208V supply where older motors may not.

Check Voltage, Frame and Mounting Before Ordering

Verify that your supply matches 115V or 208-230V and that the 145TC frame fits the existing mounting pattern. Confirm the shaft rotation requirement suits CW/CCW reversible operation. Note the motor has no thermal protection and carries Proposition 65 warnings for cancer and reproductive harm.

How it compares

Measured against everything we stock in Fan Motors, Parts & Clip-On Fans, at today’s prices. Recalculated every night.

Price $371.99
Pricier than about 90% of the 473 comparable items (median $38.99).

Specifications

Product
Brand nameDAYTON
Product typeClosed Base

Questions about this item

What frame size and mounting style does the 145TC motor need?

The motor uses a 145TC frame with C-Face rigid base mounting and can be installed at any angle.

How do I wire the capacitor-start motor for 115 V or 208-230 V operation?

Connect the leads for 115 V at 14.8 A or 208-230 V at 7.5-7.3 A following the diagram on the nameplate; the motor runs at 1,725 rpm.

What ongoing care does the open drip-proof motor with Class B insulation require?

Keep the 40 °C max ambient clean, ensure ventilation stays clear, and monitor bearing noise since there is no thermal protection.

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