How does shipping work for orders on MRO Exchange?

Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

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A.O. Smith CA2H021N Shaded Pole Motor 1500 RPM

$326.00 USD

Sale Sold out

ConditionSurplus - Untested MPNCA2H021N Stock #0526-02410

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 10.0 lbs

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Rated at 1/20 HP and 1550 RPM, the A.O. Smith 657 is a single phase shaded pole motor designed for HVAC condenser fan, blower, and unit heater applications. The nameplate identifies model CA2H021N, stock number 657, serial 068126M, with an operating voltage range of 208-240/480V at 60 Hz. Current draw is 0.75 amps at 208-240V and 0.34 amps at 480V. The motor uses Class B insulation, sleeve bearings, and includes built-in thermal overload protection. A 5/16 inch diameter by 3 5/8 inch stainless steel shaft extends from the closed 4.3 frame, and rotation is CCWSE per the manufacturer box label. The unit is rated for continuous duty and was assembled in Mexico under the A.O. Smith Universal Electric Motor division based in Tipp City, Ohio. Factory cross references on the original box include CA2H013, CA2H015, 3900-0361-000-001, and 3900-0361-002, making this motor a direct replacement option for Emerson Chromalox motors used in Marley, QMark, Berko, and similar electric unit heaters as well as a range of OEM HVAC condenser fan applications. UL and CSA recognized. The motor ships with original color coded lead wires for 208-240V or 480V wiring configurations. Carries the Universal Electric and A.O. Smith branding from the period prior to the Century and Regal Rexnord transition.

Stock # 0526-02410

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.