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Dayton 2 hp capacitor-start run motor open drip proof cradle base

Dayton

Dayton 30PT87 Capacitor-Start/Run Motor 2 hp 115/230V AC

SKU CH-MJ2Y-WJJR4

Delivers 2 hp at 1,725 RPM on single-phase 115/230 V AC with capacitor start/run and 1.15 service factor

  • weight43.9
  • typeClosed Base
  • 2 hp output powers demanding machinery
  • Capacitor-start/run design delivers strong starting torque
  • Dual 115/230 V voltage suits varied supplies
  • 1,725 rpm speed matches common equipment needs
  • 56H frame fits standard mounting patterns

Purpose and Fit

The Dayton 30PT87 is a single-phase, capacitor-start/run motor rated at 2 hp for 115/230V AC supplies. It suits general-purpose machinery that needs a 56H frame, 1,725 RPM output and continuous duty at up to 40 °C ambient.

Thermals, Noise and Power

The open drip-proof enclosure relies on natural airflow, so the unit runs at its 1.15 service factor with 17.0 A at 115 V or 8.5 A at 230 V. No thermal protection is fitted, so external overload provision is required for sustained loads.

Accessories and Software

The cradle-base mounting and reversible CW/CCW rotation let installers adapt the motor to existing horizontal setups without extra brackets. Class B insulation and a 60 Hz rating complete the factory configuration.

Highlights

  • 2 hp output powers demanding machinery
  • Capacitor-start/run design delivers strong starting torque
  • Dual 115/230 V voltage suits varied supplies
  • 1,725 rpm speed matches common equipment needs
  • 56H frame fits standard mounting patterns

Specifications

BrandDAYTON
weight43.9
typeClosed Base

Questions about this item

How do I wire the 115/230V AC capacitor-start/run motor for my voltage supply?

Connect the leads for either 115 V or 230 V as shown on the motor nameplate; the common error is leaving the dual-voltage jumpers in the wrong position for the supply voltage.

Which parts will need replacement during the life of this 2 hp motor?

The start and run capacitors are the typical wear items; bearings may also require service after extended continuous duty at 40 °C ambient.

What thermal limit appears first when the motor runs continuously at full load?

The insulation is Class B and the maximum ambient temperature is 40 °C, so winding temperature rise reaches its design limit before any other protection activates.

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