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Dayton three-phase motor, open drip-proof steel frame, rigid base, 56 frame size

Dayton

Dayton 20VD21 3-Phase Motor 1/4 HP 56 Frame 230/460V AC

SKU CH-33GN-QTXKA

Three-phase general purpose motor delivers 1/4 HP at 1,725 RPM in a 56 frame with 230/460V dual-voltage operation

  • Delivers 1/4 HP for light-duty three-phase applications
  • Runs at 1,725 RPM for steady output
  • Dual-voltage 230/460 V AC suits multiple supplies
  • 56 frame steel construction fits standard mounts
  • Class B insulation with 1.35 service factor handles continuous duty

Dayton 20VD21 Three-Phase Motor

This Dayton 20VD21 is a three-phase general-purpose motor rated at 1/4 HP in a 56 frame. It suits maintenance teams and OEMs replacing or specifying a direct-drive unit for pumps, fans or conveyors where 230/460 V AC supply is available. The open drip-proof enclosure and rigid base mounting fit standard industrial footprints.

Open Drip-Proof Steel Frame With Ball Bearings

The steel frame carries an open drip-proof design that lets air move through the windings while shedding falling liquids. Ball bearings support the shaft for smooth rotation in either direction, and the rigid base bolts directly to machinery feet without extra adapters. Class B insulation and a 1.35 service factor give margin for continuous duty at 40 °C ambient.

1725 RPM At 60 Hz With Dual-Voltage Windings

Nameplate speed is 1725 RPM on 60 Hz, falling to the 50 Hz band covered by the 1701-1800 range. Dual-voltage windings accept 230 V at 1.0 A or 460 V at 0.55 A full-load current, so the same motor fits either supply without rewiring. Nominal efficiency is 69.5 percent and thermal protection is not included, so external overload provision is required.

Highlights

  • Delivers 1/4 HP for light-duty three-phase applications
  • Runs at 1,725 RPM for steady output
  • Dual-voltage 230/460 V AC suits multiple supplies
  • 56 frame steel construction fits standard mounts
  • Class B insulation with 1.35 service factor handles continuous duty

Specifications

BrandDAYTON

Questions about this item

What voltage does the 230/460V AC three-phase supply actually deliver to the windings?

The motor runs on a 230/460V AC three-phase supply at 60/50 Hz, drawing 1.0 A at 230 V or 0.55 A at 460 V under full load.

Will the 56 frame rigid base bolt directly to my existing mounting pattern?

It uses a NEMA 56 frame with a rigid steel base; the four mounting feet match the standard 56 footprint for direct replacement.

How do I wire the nine leads for 230 V versus 460 V without reversing rotation?

Configure the nine leads in parallel for 230 V or series for 460 V per the nameplate diagram; swap any two supply lines to change from CW to CCW rotation.

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