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Dayton capacitor-start run motor, 56 frame, rigid base, open drip-proof enclosure

Dayton

Dayton 103840.00 Capacitor-Start/Run Machinery Motor 3/4 hp 115/208-230V 56 Frame

SKU CH-BJGY-G6T89

Capacitor-start/run motor delivers 3/4 hp at 450 rpm on 115/208-230V single-phase power in a 56 frame open drip-proof enclosure

  • Product weight20
  • Product typeClosed Base
  • Capacitor-start/run design gives strong starting torque for heavy loads
  • 3/4 hp output handles continuous-duty industrial applications
  • Dual-voltage 115/208-230 V AC suits multiple supply configurations
  • Auto thermal protection and Class B insulation protect against overheating
  • Rigid 56-frame base simplifies mounting on standard machinery

3/4 hp Capacitor-Start/Run Motor

The Dayton 103840.00 is a single-phase general-purpose motor rated at 3/4 hp. It operates on 115/208-230V AC at 60 Hz and fits a standard 56 frame mounting pattern. This unit suits equipment requiring continuous duty in industrial or commercial settings.

Thermals and Power Draw

The motor carries a 1.25 service factor and Class B insulation with automatic thermal protection. It runs at a maximum ambient temperature of 40 degrees C. Full-load current measures 7.2 A at 115V and 4.0 to 3.6 A at 208-230V.

3,450 RPM Fixed-Speed Output

Nameplate speed is fixed at 3,450 RPM with a single-speed design. Rotation is reversible between CW and CCW. Buyers who need variable-speed control or a different frame size should select another model.

How it compares

Measured against everything we stock in Industrial Motors & Machine Parts, at today’s prices. Recalculated every night.

Price $445.99
Pricier than about 78% of the 397 comparable items (median $91.99).

Specifications

Product
Brand nameDAYTON
Product typeClosed Base

Questions about this item

How do I wire the Dayton 103840.00 for 230 V operation and what is the common mistake?

Connect the dual-voltage leads for the 208-230 V configuration shown on the nameplate; the step most often missed is moving the internal jumper links to match the higher voltage before applying power.

Which parts of the 3/4 hp capacitor-start/run motor typically need replacement after extended service?

The start capacitor, run capacitor and centrifugal switch mechanism are the wear items that usually require attention first on this design.

What is the first performance limit reached when the motor runs continuously at full load in a 40 °C ambient?

The Class B insulation temperature rise limit is reached first, constrained by the 1.25 service factor and automatic thermal protection.

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