Century Square Flange Pool Pump Motor, 2HP 230V 56Y | B2859
Century
SKU: CRMB2859
Century B2859 2 HP 3450 RPM Square-Flange Pool & Spa Pump Motor
The Century B2859 is a robust, OEM-grade pool pump motor suitable for many in-ground pool and spa pumps from major brands. With a 2-horsepower rating and a 3450 RPM single-speed design, it provides strong, reliable circulation — ideal for larger pools or demanding filtration systems.
Key Features
- 2 HP nominal (≈ 2.2 HP total with 1.10 service factor) for strong hydraulic output.
- 3450 RPM, single-speed operation — simple, direct performance with no programming needed.
- Square-flange (56Y / 56Y-frame) mount with 5/8″ threaded stainless-steel shaft — fits many common wet-end pump housings designed for direct-drive motors.
- Single-phase 115/230 V compatibility with dual-voltage wiring — flexible replacement for older motors on 115 V or 230 V systems.
- Open-drip-proof (ODP) enclosure with continuous-duty rating and ball-bearing design — dependable long-term pump motor operation.
- Auto thermal overload protection and threaded shaft make installation and service straightforward.
Specifications
- Manufacturer: Century (Regal / A.O. Smith lineage)
- Model / Part Number: B2859
- Horsepower: 2 HP (2.2 THP with service factor 1.10)
- Speed: 3450 RPM, single-speed
- Voltage: 115 V or 230 V AC, single phase, 60 Hz
- Full-Load Amps (approx): 22.4 A @115 V / 11.2 A @230 V
- Frame / Mount: 56Y square-flange / face-mount (C-face) without base
- Shaft: 5/8″ stainless-steel, threaded (fine thread, 1/2″-20 / 5/8″ diameter)
- Enclosure: Open Drip-Proof (ODP), ball-bearing, continuous-duty rated
- Rotation: Counter-clockwise (pump-end view)
- Service Factor: 1.10
- Duty: Continuous / pool-rated
Applications & Compatibility
The B2859 serves as a direct replacement motor for many popular in-ground pool pumps and wet ends from manufacturers such as Pentair (e.g. WhisperFlo, Challenger, Pinnacle), Sta-Rite (Max-E-Glas, Dyna-Max, etc.), Jandy, and others that accept a 56Y face-mount motor. It’s a common choice when an original motor fails or when upgrading from an older or underpowered motor.
Installation & Maintenance Tips
- Confirm your pump housing accepts a 56Y square-flange motor with a 5/8″ threaded shaft before ordering.
- Replace the mechanical pump seal when installing the new motor — seals degrade over time and are often the root cause of leaks when reusing old motors.
- Ensure correct wiring for 115 V or 230 V supply and follow local electrical codes; double-check voltage labeling on the motor nameplate before wiring.
- After installation, prime and run the pump — listen for unusual noises, check for leaks, and verify adequate flow.
- Consider using vibration-dampening mounting pads or isolators if noise or vibration is a concern.
Why Use the B2859
For pool professionals and serious pool owners, the B2859 offers a proven, high-power, direct-drive motor solution that restores original pump performance or upgrades flow capacity. Its robust design and industry-standard mounting make it a versatile and widely compatible motor — a reliable choice when you want strong, consistent circulation without the complexity of variable-speed electronics.
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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