By Century Motors



Part # USQ1252

Warranty 1 Year

Alternate Part #'s 11804, 13280, 5KCR48UN2496X, A100G5L, A100G5LL, AE100G5LL, B840, B840SE, C1284, K48A03A24, K48N2EC11A1, K48N2P102A2, K48N2P102A3, K48N2P103, K48N2PA102A1, K48N2PA102A3, K48N2PA105, K48N2PA105A2, K48N2PA105C5, SQH25UP1, SQH25UP1E, USQ1252, V13280, AOS-60-5232, AOSUSQ1252

Product Description

Voltage 115/230, 230V = 11.2, Single Speed, Square Flange, RPM = 3450, Threaded Shaft, Frame = 48Y Used on the following models: Sta-Rite Max-E-Glas, Max-E-Glas II, Dura-Glas, Dura-Glas II, Dyna-Glas, Dyna-Max Pentair Whisperflow, Pinnacle and Anthony AR2 Series.

Note: NOT California Title 20 Compliant. 

Dual Speed Option (NOT California Title 20 Compliant):

Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

2.5 HP
230 V
11.2 amp
Service Factor:
Total HP:
2.5 HP
Century (A.O. Smith)
3450 RPM
Commonly Used On:
Sta-Rite Max-E-Glas, Max-E-Glas II, Dura-Glas, Dura-Glas II, Dyna-Glas, Dyna-Max Pentair Whisperflow, Pinnacle and Anthony AR2 Series.

?     Asked on 1/11/2012by Guest

What is Service Factor?

A  Answered on 1/11/2012 by InyoPools Product Specialist Patrick P.

Service Factor(SF) is a multiplier that when multiplied by the horsepower of the motor indicates the total permissible horsepower loading that may be carried when the motor is operating at rated voltage and frequency. The most important thing to remember when replacing a motor is that the replacement motor's horsepower times its service factor must be equal to or greater than the original motor's horsepower times its service factor. The Service Factor rating can be found on the motor label. See Step 4 of our How to Read a Pool Motor Label guide.

?     Asked on 1/12/2012by Guest

Why do I need to purchase a new shaft seal?

A  Answered on 1/12/2012 by InyoPools Product Specialist Patrick P.

We strongly recommend replacing the shaft seal. The purpose of a shaft seal is to prevent water from running down the shaft of the motor and into the motor housing. Water will damage the bearings and cause the motor to fail. A new shaft seal should be installed whenever a motor is replaced. The motor manufacturer can deny the warranty if the motor fails to due to water damage from a faulty shaft seal. To find your shaft seal you will need to visit our Pool Pump Parts Page or the Spa Pump Parts Page and select your make and model.

?     Asked on 1/12/2012by Guest

Why should I purchase a Tune Up Kit?

A  Answered on 1/12/2012 by InyoPools Product Specialist Patrick P.

A Tune Up Kit includes all of the essential replacement seals and gaskets for the pump. The seals and gaskets should be replaced when installing a new motor on your pump. New seals will prevent the pump from leaking water or losing the prime. A Tune Up Kit will protect your motor and ensure that the pump is working efficiently.

?     Asked on 1/19/2012by Guest

I'm trying to replace the motor on my pool pump but all these numbers and abbreviations on the motor label are really confusing me. What do they mean?

A  Answered on 1/19/2012 by InyoPools Product Specialist Patrick P.

Replacing a pool pump motor is not as difficult as it seems. You can try looking here. If you need help figuring out what the information on your label means. If you are still having difficulty figuring it out you can call us at our toll free number or you can send us a photo of your motor label here.

?     Asked on 6/17/2015by Adrian V

Hi I'm trying to repair a USQ1252 motor, the problem is that the capacitor has gone bad but I can't identify the range of microfarads of the capacitor, can someone tell me what capacity should the capacitor be for this motor????

A  Answered on 6/18/2015 by InyoPools Product Specialist Robert M.

Hello Adrian - The run capacitor is 370v and 30 MFD. The start capacitor is 250v and 36-43 MFD.


Est. Repair Time

1 to 2 hrs

Tools Needed

Screwdriver, Pliers, Socket Set, Wrench Set

My pool pump was making loud sounds and eventually it seized up.

Written on 4/21/2022 by Guest

Disconnected power at the breaker.
Removed the power from pump and disconnected the pump from the housing. I noticed that the impeller was broken. Wasn’t obvious to me at first, but I quickly reorder a new impeller. I will say YouTube is your friend. Numerous videos helped me get it installed.

With a little patience, I had it back together in less than 2hrs.

Were these instructions helpful? 


Review Summary

 (Average 4.67  out of 5 stars)
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