Century 3/4 HP 56Y PSC Switchless Square Flange Motor | B2847V1
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Century's B2847V1 is part of the Centurion 56Y pool and spa duty motor line, built specifically for in-ground circulation pumps. It uses a permanent split capacitor (PSC) switchless design, which eliminates the mechanical start switch found in older motors and reduces one of the most common failure points.
With a 56Y square flange mount, 3/4 HP rating, and 115/230V single-phase wiring, this motor is commonly used on Pentair WhisperFlo and Challenger full-rated pumps and other systems that call out B2847/B2847V1 as the replacement motor.
Warranty terms are set by Century/Regal Rexnord and may vary by region and application. Treat warranty specifics as not listed here (N/A). Refer to the current Century/Regal Rexnord documentation and your ePoolSupply invoice for actual coverage, term length, and claim procedures.
- Shaft Seal for Pentair WhisperFlo & Ultraflow Pumps | 071734S
- Pentair WhisperFlo Pump Power End Subassembly | 075251
- Pentair WhisperFlo Pump Power End Subassembly | 075252
- Pentair WhisperFlo VST Variable Speed Pool Pump | EC-011533
Always verify pump model, horsepower, and frame before ordering related parts so the motor, seal kit, and wet end components match.
Q: Will this motor fit my Pentair WhisperFlo pump?
A: It is commonly used on 3/4 HP full-rated WhisperFlo and Challenger pumps. Confirm your existing motor label or parts chart calls out B2847 or B2847V1, and match frame (56Y), flange (square), shaft type (threaded), horsepower, and voltage before ordering.
Q: Is this a variable-speed or two-speed motor?
A: No. This is a single-speed PSC motor that runs at approximately 3450 RPM. If you need energy savings or programmable speeds, consider upgrading to a compatible variable-speed pump such as the WhisperFlo VST.
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Description
Description
Century 3/4 HP 56Y PSC Switchless Square Flange Motor | B2847V1
Century 3/4 HP 56Y PSC switchless square flange pool pump motor, 115/230V single-phase with threaded shaft. Direct replacement for many WhisperFlo/Challenger pumps.
Features
- 3/4 HP, 115/230V single-phase PSC switchless design for efficient, quiet operation
- 56Y square flange with threaded 5/8" shaft fits many Pentair WhisperFlo and Challenger pumps
- 1.65 service factor and roughly 1.24 total HP for solid startup torque and headroom
- Open drip-proof housing with ball bearings for continuous-duty pool and spa service
- Rolled steel frame and corrosion-resistant shaft for long-term durability in equipment pads
Description
The Century B2847V1 motor is built to drive full-rated in-ground pool and spa pumps that need a 3/4 HP square flange replacement. It runs at 3450 RPM on 115/230V single-phase power and uses permanent split capacitor (PSC) technology, so there is no mechanical start switch to fail. A 1.65 service factor gives the motor extra margin under real-world voltage and load conditions, which helps maintain flow and reduce nuisance trips when the system is under strain.
The 56Y square flange bolt pattern and threaded 5/8" shaft are designed to match many Pentair WhisperFlo and Challenger pumps, along with other models that specifically list B2847 or B2847V1 on the motor label. As long as the wet end is structurally sound and properly sealed, swapping in this motor restores performance without replacing the entire pump.
Pro Tip
Before you unbolt the old motor, record the wiring, voltage setting, and pump model. Replace the shaft seal and inspect the impeller and seal plate while the pump is apart. After reassembly, verify rotation and leaks with the system primed before you button up the pad.
Related Parts
- Shaft Seal for Pentair WhisperFlo & Ultraflow Pumps | 071734S
- Pentair WhisperFlo Pump Power End Subassembly | 075251
- Pentair WhisperFlo Pump Power End Subassembly | 075252
- Pentair WhisperFlo VST Variable Speed Pool Pump | EC-011533
Installation Tips
Disconnect power, lock out the breaker, and verify the circuit is de-energized before touching any wiring. Match frame, flange, shaft type, horsepower, and voltage to the old motor or pump nameplate. Always install a new shaft seal when changing a motor, align the motor and seal plate carefully, and ensure the fan shroud has clear airflow. Follow local electrical codes and manufacturer instructions.
Specifications
Specifications
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Product Warranty
Product Warranty
We want you to have quick and easy access to warranty information for all the brands we carry. Please click on the links below to view each manufacturer’s warranty page:
- Pentair Warranty
- A&A (Pentair In-Floor) Warranty
- Fluidra Warranty (Zodiac / Jandy / Polaris / Caretaker)
- Paramount Warranty
- BlueSquare Warranty
- Hayward Warranty
- All Other Manufacturer Warranties
Note: Warranty coverage, registration, and service terms are provided directly by the manufacturer. Please review the details carefully to ensure proper understanding of coverage and claim procedures.
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