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Baldor-Reliance EM3157TA three-phase motor, steel frame, open drip-proof enclosure, rigid base

Baldor Electric

Baldor Electric EM3157TA 2 HP 145T Three-Phase Motor

SKU CH-S7B5-7RGNA

Three-phase general-purpose motor delivers 2 HP at 1755 rpm in a 145T steel frame with 86.5% nominal efficiency

  • Product weight44.1
  • Product typeClosed Base
  • Main materialHAWA
  • 2 HP three-phase power for industrial machinery
  • 1755 rpm nameplate speed matches standard 4-pole motor requirements
  • 5 % nominal efficiency reduces energy consumption during continuous duty
  • 208-230/460 V dual-voltage design simplifies electrical installation
  • Steel frame with ball bearings ensures durable rigid-base mounting

Application & User Fit

The Baldor-Reliance EM3157TA is a 2 HP three-phase general-purpose motor built for continuous industrial duty. It suits equipment builders and maintenance teams needing a reliable 145T frame unit for pumps, fans, or conveyors. Buyers who require a single-phase design or a different frame size will need an alternative model.

Electrical & Environmental Limits

The motor operates on 208-230/460V AC at 60 Hz with full-load currents of 5.8 / 2.9 A and a 1.15 service factor. Insulation class F and a 40 degrees C maximum ambient temperature define the thermal envelope. Operation beyond the rated voltage, frequency, or ambient range is not supported by the nameplate data.

Installation Checklist

Verify that your supply matches the dual-voltage nameplate and that the starter provides three-phase power with appropriate overload protection. Confirm the 145T frame dimensions and rigid base mounting pattern align with your driven equipment. Ensure the shaft rotation direction suits the application, as the motor supports both CW and CCW operation.

How it compares

Measured against everything we stock in Industrial Motors & Machine Parts, at today’s prices. Recalculated every night.

Price $812.99
Pricier than about 90% of the 397 comparable items (median $91.99).

Specifications

Product
Brand nameBALDOR ELECTRIC
Product typeClosed Base
Size & build
Main materialHAWA

Questions about this item

Should I pick the 208-230 V or 460 V connection for my supply?

The motor is dual-voltage; wire it for 208-230 V and draw 5.8 A at full load, or reconfigure for 460 V and draw 2.9 A.

What does the 1755 rpm nameplate speed mean when the motor is loaded?

At 2 hp output the shaft turns at 1755 rpm on a 60 Hz supply; the synchronous speed is 1800 rpm, so slip is about 45 rpm.

How does the 145T frame and NEMA design affect what I can bolt this to?

The 145T frame fixes the bolt pattern and shaft height to NEMA standards, so it mounts directly on any 145T base or coupling.

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