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Dayton 31TT15 three-phase motor, steel frame, open drip-proof enclosure, rigid base mount

Dayton

Dayton 31TT15 3-Phase Motor 1 HP 56H 230/460V

SKU CH-8MA2-KCH8K

Three-phase general-purpose motor delivers 1 HP at 1725 RPM with dual-voltage 230/460 V operation and 83.5 % nominal efficiency

  • 1 HP three-phase power for industrial equipment
  • 230/460 V dual-voltage fits multiple supply systems
  • 1725 RPM nameplate speed matches standard drive ratios
  • 5 % nominal efficiency lowers energy consumption
  • 15 service factor handles temporary overloads

Dayton 31TT15 1 HP Motor

The Dayton 31TT15 is a three-phase general-purpose motor rated at 1 HP with a 56H frame. It operates on 230/460V AC at 60/50 Hz and suits industrial equipment requiring continuous duty. The open drip-proof enclosure and rigid base mounting fit standard machinery installations. Buyers needing a single-phase motor or a different frame size should look elsewhere.

Capacity and Headroom

At 1,725 nameplate RPM the motor delivers 3.0 amps at 230V or 1.5 amps at 460V with a 1.15 service factor for moderate overload headroom. Nominal efficiency reaches 83.5 percent under full load. The insulation class B and 40 °C maximum ambient temperature define the thermal envelope. Applications demanding higher horsepower, greater efficiency or a totally enclosed design fall outside this unit's range.

Three-Phase 230/460V Interface

Dual-voltage windings accept 230V or 460V three-phase supply at 60 or 50 Hz without rewiring. Ball bearings and a steel frame support bidirectional CW/CCW shaft rotation. No internal thermal protection is fitted, so external overload devices are required by installation codes. Systems lacking three-phase power or requiring built-in thermal switches cannot use this motor directly.

Highlights

  • 1 HP three-phase power for industrial equipment
  • 230/460 V dual-voltage fits multiple supply systems
  • 1725 RPM nameplate speed matches standard drive ratios
  • 5 % nominal efficiency lowers energy consumption
  • 15 service factor handles temporary overloads

Specifications

BrandDAYTON

Questions about this item

Will this 230/460V motor connect to my existing 56H frame mounting points?

Yes, the 56H frame matches standard NEMA dimensions, so the rigid base bolts directly to existing 56H mounting patterns without modification.

How can I verify the motor is running at the correct 1725 RPM nameplate speed after installation?

Use a handheld tachometer on the shaft; it should read approximately 1725 RPM under full load at 60 Hz, confirming the 1 HP output and 83.5 percent nominal efficiency.

Does the box include the 3.0/1.5 A overload protection or must I buy a separate starter?

The motor has no built-in thermal protection, so a separate magnetic starter with overloads rated for 3.0 A at 230 V or 1.5 A at 460 V must be purchased and wired externally.

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