Century B122 1 HP keyed full rated pool and spa pump motor, 115/230VCentury Keyed Full Rated Pool and Spa Pump Motor, 1 HP, 115/230V In stock$30194
Century B122 1 HP keyed full rated pool and spa pump motor, 115/230V

Century Keyed Full Rated Pool and Spa Pump Motor, 1 HP, 115/230V

Ask a questionAPS # MGT-60-5093
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$30194

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Quick overview

  • Full rated 1 HP A full rated motor, 1.0 HP output with a 1.4 total horsepower rating.
  • Keyed shaft A 5/8 inch keyed shaft rather than a threaded one, so it drives the impeller through a key.
  • Dual voltage Wired for 115 or 230 volts, drawing 7.2 or 14.4 amps at service factor.
  • CX C-face frame A 56C frame with a C-face and no base, the CX style square flange mounting.
  • Permanent split capacitor A switchless PSC design, so there is no start switch to stick or burn.
  • Built for outdoor duty Open dripproof enclosure, continuous duty, automatic thermal protection and a 50 deg C ambient rating.
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Product details

The Century B122 is a Centurion full rated pool and spa pump motor rated 1 HP at 3450 RPM. It is a CX-Type motor on a 56C C-face frame with no base, wired for 115 or 230 volts, and it turns counterclockwise viewed from the pump end.

Full rated, and what the numbers mean

Full rated means the motor makes its nameplate horsepower on its own, so the 1.0 HP rating is real output rather than a number that leans on the service factor. With a 1.40 service factor the total horsepower comes out at 1.4 THP. Current draw is 7.2 amps at 230 V or 14.4 amps at 115 V at service factor, single phase, 60 Hz.

Keyed shaft

The shaft is 5/8 inch in diameter with a keyway and a 2-1/16 inch extension, so this motor belongs on pumps built for a keyed drive rather than a threaded one. Overall length is 11.89 inches. Measure the shaft on the motor you are replacing before you order, because keyed and threaded shafts are not interchangeable.

Construction

It is a permanent split capacitor design with no start switch, in an open dripproof enclosure with an aluminum flange, rated for continuous duty at ambient temperatures up to 50 deg C with class B insulation and automatic thermal protection.

Specifications
Brand Century
Manufacturer part number B122
UPC 663001192657
Series Centurion full rated pool and spa pump motor, CX-Type
Motor design Permanent split capacitor, single or dual voltage
Horsepower 1 HP, 1.4 THP
Speed 3450 RPM, 1 speed
Voltage 115/230 V
Current 7.2/14.4 A at service factor
Frequency and phase 60 Hz, 1 phase
Frame 56C, C-face, no base
Enclosure Open dripproof
Service factor 1.40
Shaft Keyed, 5/8 inch diameter
Shaft length 2-1/16 inch
Overall length 11.89 inch
Rotation Counterclockwise pump end
Shipping weight 25.25 lb
Ships Parcel

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Customer reviews

Questions and answers

What people ask about this product, answered by our pool techs.

What does full rated mean?
A full rated motor delivers its nameplate horsepower without leaning on the service factor. This one is 1.0 HP output with a 1.4 service factor, giving 1.4 total horsepower.
Can I run it on 115 volts?
Yes. It is a dual voltage motor rated 115/230 V, drawing 7.2 amps at 230 V or 14.4 amps at 115 V at service factor.
Is this a keyed shaft or a threaded shaft?
Keyed. The shaft is 5/8 inch diameter with a keyway, 2-1/16 inch long, so the pump it goes into must use a keyed impeller drive.
Which way does it turn?
Counterclockwise viewed from the pump end, the standard rotation for pool pump motors.
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