Century B625 .75 HP threaded shaft motor for the Polaris booster pump, 115/230VCentury Threaded .75 HP Polaris P61 Booster Pump Motor 115/230V, B625 In stock$30899
Century B625 .75 HP threaded shaft motor for the Polaris booster pump, 115/230V
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Century Threaded .75 HP Polaris P61 Booster Pump Motor 115/230V, B625

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$30899
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Quick overview

  • Direct P61 replacement Century lists B625 as identical to the P61 115/230V booster pump motor.
  • Threaded shaft Half inch threads on the shaft, which is what the Polaris booster pump wet end requires.
  • Dual voltage Wired for 230V or 115V single phase at 60 Hz.
  • Sealed ball bearings Ball bearings at both the drive end and the opposite drive end, sealed from the start.
  • 1.5 service factor Three quarter output HP with a 1.5 service factor and continuous duty rating.
  • Non-reversible rotation Single rotation motor built for booster pump and cleaner duty, so it goes on one way.
Full description and specifications ↓

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Product details

The Century B625 is the three quarter HP threaded shaft motor for the Polaris booster pump, listed by the manufacturer as identical to the P61 115/230V motor.

Threaded shaft

Booster pumps do not take an ordinary pool motor. The shaft on this one carries 1/2 inch threads, which is how the booster wet end mounts, so a standard keyed shaft motor is not a substitute.

Electrical and mechanical

It is a single phase, dual voltage motor rated 230/115 V at 60 Hz, running 3450 rpm on an N56CZ frame with a 1.5 service factor and a continuous duty rating. Full load current at service factor is 6.4/12.8 A. Construction is drip proof with sealed ball bearings at both ends, a rolled steel frame and Class B insulation, rated to a 40 C ambient and thermally protected.

Rotation

The manufacturer data states rotation two ways, as CW Non-Reversible and as Counterclockwise Pump End. It is a single rotation motor either way, so the wet end goes back together the way it came apart.

From Pool School

Replace the Pool Pump Motor or the Whole Pump?The manufacturers' tests first, what each repair replaces, and the federal motor rule. Read How to Prime a Pool PumpFrom the breaker to a full pot, each manufacturer's time limit, and what to check when it won't catch prime. Read
Specifications
Brand Century
Manufacturer part number B625
UPC 786674012647
Substitute part numbers P61
Application Booster pump, cleaner
Output HP 3/4 Hp
Output kW 0.56 kW
Voltage 230/115 V
Speed 3450 rpm
Service factor 1.5
Frame N56CZ
Shaft type 1/2" THREADS
Rotation Listed as CW Non-Reversible, and as Counterclockwise Pump End
Bearings Sealed ball, drive end and opposite drive end
Enclosure Drip Proof
Current SF 6.4/12.8 A
Overall length 14.13"
Shipping weight 25 lb
Ships Parcel

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Customer reviews

Questions and answers

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

Will this replace my P61 motor?
Century lists B625 as identical to the P61 115/230V motor for the Polaris booster pump, and carries P61 as a substitute part number.
Can it run on 115V?
It is a dual voltage motor rated 230/115 V, single phase, 60 Hz. Wiring for the voltage you have is part of the installation.
What shaft does it have?
A threaded shaft, 1/2 inch threads, which is what the Polaris booster pump wet end takes. A standard keyed or square flange pool motor will not substitute.
Which direction does it turn?
The source states it two ways: CW Non-Reversible in the key features, and Counterclockwise Pump End in the technical data. Either way it is a single rotation motor, so the pump end has to be assembled the way the original was.
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