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Grey industrial electric motor with steel housing and cooling fins, rigid base mounting

Baldor Electric

Baldor Electric M3538 three-phase machinery motor 1/2 HP 56 frame 230/460V 1725 RPM

SKU CH-Z1K6-R6FTC

A three-phase, totally enclosed fan-cooled motor delivering 1/2 HP at 1725 RPM from a 56 frame with 230/460V input and 74 percent nominal efficiency

  • weight22.76
  • typeClosed Base
  • materialHAWA
  • 1/2 HP output powers general-purpose machinery
  • Three-phase 230/460 V suits industrial supply
  • 1725 RPM nameplate speed matches standard equipment
  • 74 % nominal efficiency reduces energy cost
  • 25 service factor handles intermittent overloads

Three-phase general purpose motor

The Baldor-Reliance M3538 is a three-phase general purpose motor rated at one-half horsepower. It suits industrial machinery and fixed installations that run on 230/460 V AC supply. The motor delivers a nameplate speed of 1,725 RPM and carries a service factor of 1.25 for continuous duty cycles.

Steel frame with rigid base mounting

A steel frame and closed-base construction protect internal windings in dusty or damp workshops. Totally enclosed fan cooled enclosure keeps operating temperature within a 40 °C ambient limit. Rigid base mounting bolts directly to machine beds without extra brackets. Ball bearings support the shaft for bidirectional rotation.

Efficiency and protection limits

Nominal efficiency reaches 74 percent at full load current of 1.6 A on low voltage or 0.8 A on high voltage. Insulation class B and lack of built-in thermal protection mean external overload devices are required. The motor meets CSA and UR standards for compliance in regulated environments.

Highlights

  • 1/2 HP output powers general-purpose machinery
  • Three-phase 230/460 V suits industrial supply
  • 1725 RPM nameplate speed matches standard equipment
  • 74 % nominal efficiency reduces energy cost
  • 25 service factor handles intermittent overloads

Specifications

BrandBALDOR ELECTRIC
weight22.76
typeClosed Base
materialHAWA

Questions about this item

What voltage supply does the 230/460 V three-phase motor require?

It runs on 230 V or 460 V AC three-phase power at 60 Hz, drawing 1.6 A at 230 V or 0.8 A at 460 V.

What are the mounting dimensions for the 56 frame rigid base?

The motor uses a NEMA 56 frame rigid base with four mounting holes; exact bolt pattern follows the NEMA 56 standard.

How do I wire the motor for 230 V versus 460 V operation?

Reconfigure the nine leads inside the conduit box per the nameplate diagram — series connection for 460 V, parallel for 230 V — and verify rotation before coupling.

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