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Dayton 1/4 HP open drip-proof motor with C-face rigid base

Dayton

Dayton 30PT38 1/4 HP 1725 RPM 56C Fan Accessory

SKU CH-JPEQ-GW40K

Single-phase capacitor-start/run motor delivers 1/4 hp at 1,725 rpm with a 56C C-face rigid base for direct fan mounting

  • weight18
  • typeClosed Base
  • 1/4 HP motor delivers reliable continuous duty performance
  • Capacitor-start/run design provides efficient single-phase operation at 68.5% efficiency
  • Dual voltage 115/230V AC suits flexible installation requirements
  • Open drip-proof enclosure with 56C C-face mounting fits standard fan accessories
  • 1725 RPM at 60 Hz with 1.35 service factor handles demanding airflow tasks

Motor for Continuous-Duty Fan Upgrades

The Dayton 30PT38 is a single-phase capacitor-start/run motor rated at 1/4 hp and 1,725 rpm. It operates on 115/230 V AC at 60 Hz and fits a 56C frame with C-face rigid-base mounting. Designed for horizontal installation, it serves builders replacing worn fan drives in HVAC, ventilation or light-industrial equipment.

Steady Output Under Constant Load

With a 1.35 service factor and Class B insulation, the motor sustains continuous duty at up to 40 °C ambient without thermal protection. Full-load current draws 3.1 A at 115 V or 1.5 A at 230 V, and the open drip-proof enclosure allows airflow while resisting falling moisture. Efficiency is listed at 68.5 % for consistent daily operation.

Direct Drop-In for Matching Frame Motors

This unit replaces any 56C-frame, 1/4 hp, 1,725 rpm motor with the same voltage and mounting pattern. The jump is worth it when the original motor lacks a service-factor margin or runs hotter than 40 °C. It is not for applications requiring inverter-rated operation, vertical mounting, or integrated thermal overload protection.

Highlights

  • 1/4 HP motor delivers reliable continuous duty performance
  • Capacitor-start/run design provides efficient single-phase operation at 68.5% efficiency
  • Dual voltage 115/230V AC suits flexible installation requirements
  • Open drip-proof enclosure with 56C C-face mounting fits standard fan accessories
  • 1725 RPM at 60 Hz with 1.35 service factor handles demanding airflow tasks

Specifications

BrandDAYTON
weight18
typeClosed Base

Questions about this item

How hot does the 1/4 HP 1725 RPM motor run when operating continuously at 40°C ambient?

The motor is rated for continuous duty at a maximum ambient temperature of 40°C with Class B insulation and no thermal protection, so surface temperature will rise significantly above ambient during all-day operation.

What voltage supply and wiring are required for the 115/230V dual-voltage motor?

The motor runs on 115V or 230V single-phase AC at 60 Hz, drawing 3.1A at 115V or 1.5A at 230V, and must be wired to the appropriate supply with a capacitor-start/run circuit.

Will the 56C frame and C-face mounting fit my existing 56-frame fan shaft and base?

Yes, the 56C frame with C-face rigid base and 5/8-inch shaft matches standard 56-frame dimensions, allowing direct replacement on compatible fan assemblies.

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