Century B2859 2HP 56Y Square Flange Up-Rated Pool Motor 115/230V

The Century B2859 2 HP Up-Rated Square Flange Pool Pump Motor is a dual-voltage (115/230V) OEM-grade replacement motor built for in-ground pool and spa pumps. The 56Y square flange frame and threaded stainless steel shaft make it a direct bolt-on fit for a wide range of premium pump housings, including Pentair WhisperFlo, Challenger, Sta-Rite Max-E-Glas, and Jandy PlusHP.

🚩 PRO TIP

The B2859 ships wired for 230V by default. If your system runs on 115V, follow the wiring diagram on the motor nameplate to reconfigure before installation. Always replace the shaft seal at the same time — it's inexpensive insurance against a costly motor failure down the road.

PRODUCT FEATURES

• 2 HP Up-Rated (2.2 THP with 1.10 service factor)
• Dual voltage: 115V or 230V — field-selectable
• 56Y square flange frame for direct bolt-on replacement
• Single speed, 3450 RPM
• Threaded stainless steel shaft
• Open Drip-Proof (ODP) enclosure
• Switchless permanent split capacitor design
• Fits Pentair, Sta-Rite, Jandy, Waterway, and more
• 1-Year manufacturer warranty

TECHNICAL SPECIFICATIONS

• Model / Part Number: B2859 (replaces B859)
• Brand: Century (A.O. Smith / Regal Beloit)
• UPC: 786674012319
• Horsepower: 2.0 HP Up-Rated (2.2 THP)
• Service Factor: 1.10
• Voltage: 115/230V Dual Voltage
• Amperage: 10.5/21.0 A
• Speed: Single Speed, 3450 RPM
• Frame: 56Y Square Flange
• Shaft: Threaded, Stainless Steel, 5/8" diameter
• Enclosure: Open Drip-Proof (ODP)
• Phase: Single Phase
• Frequency: 60 Hz
• Dimensions: 14" L × 8" W × 6.5" D
• Cross-References: B859, 177476, 177217, 193987, SP3215Z1M, SPX3215Z1MR, EB859, EUSQ1202
• Compatible Pumps: Pentair WhisperFlo WF-28, Challenger CFII-N1-2A, Sta-Rite Max-E-Glas/Dura-Glas, Jandy PlusHP PHPM2.0
• Note: Not compliant with CA/NY Title 20 energy efficiency regulations
• Warranty: 1 Year

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