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Dayton capacitor-start motor, open drip-proof enclosure, cradle base, 56 frame, single-phase

Dayton

Dayton 30PT68 Capacitor-Start/Run General Purpose Motor 1/2 hp 115/230V AC

SKU CH-PBB7-180KD

Single-phase capacitor-start/run motor delivering 1/2 hp at 1,140 rpm with dual-voltage 115/230 V AC operation and automatic thermal protection

  • typeClosed Base
  • 1/2 hp output handles medium-duty loads
  • 115/230V dual voltage fits common supplies
  • 1,140 RPM single speed suits steady tasks
  • Auto thermal protection prevents overheating damage
  • Cradle base enables horizontal mounting flexibility

What the motor is and who uses it

The Dayton 30PT68 is a single-phase capacitor-start/run motor rated at 1/2 hp for 115/230V AC supply. It delivers 140 RPM nameplate speed from a 56 frame with continuous duty cycle and automatic thermal protection. Suitable for fixed-speed drives on fans, pumps or conveyors where reversible rotation and 1.25 service factor are required. Not for buyers who need variable-speed control or inverter-rated operation.

Build quality and mounting implications

Open drip-proof enclosure with Class B insulation allows operation up to 40 °C ambient in clean, dry environments. Cradle-base design with horizontal mounting simplifies alignment on flat surfaces, while dual-voltage wiring (4.8 A at 115 V or 2.4 A at 230 V) reduces installation stock. CW/CCW rotation is selectable at the terminal box. Not for builders who need sealed enclosures or vertical shaft mounting.

What this replaces and when the jump is worth it

Replaces worn single-speed 56-frame motors in HVAC, agricultural or light-industrial equipment where 1/2 hp output and 60 Hz supply match the original nameplate. The 1.25 service factor provides margin for occasional overload without frame change. Worthwhile when the existing motor has failed thermal protection or insulation class. Not for applications demanding higher speed, different frame size or inverter compatibility.

Highlights

  • 1/2 hp output handles medium-duty loads
  • 115/230V dual voltage fits common supplies
  • 1,140 RPM single speed suits steady tasks
  • Auto thermal protection prevents overheating damage
  • Cradle base enables horizontal mounting flexibility

Specifications

BrandDAYTON
typeClosed Base

Questions about this item

What does the 115/230 V AC dual-voltage rating mean for wiring this motor?

The motor can be wired for either 115 V or 230 V single-phase supply. At 115 V it draws 4.8 A full-load current; at 230 V it draws 2.4 A.

What frame size and mounting style does the 56-frame cradle-base motor use?

It conforms to the standard 56 frame dimensions and has a cradle base for horizontal mounting only.

How do I set the rotation direction on this capacitor-start/run motor?

The motor is rated for reversible CW/CCW rotation. Swap the two leads on either the start or run winding (not both) to change direction.

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