Century B985 2 HP / 0.33 HP 2-Speed 230V 56Y Pool Motor

Century B985 2-Speed Square Flange Pool Pump Motor, 2 - .33 HP, 3450/1725 RPM, 230V, Y56Y Frame, ODP

The Century B985 is a high-performance 2-speed up-rated pool pump motor engineered for residential swimming pool and spa filtration systems. Operating on single-phase 230V power, this 2 to .33 HP motor features an Open Drip-Proof (ODP) enclosure, sealed ball bearings, a corrosion-resistant 303 stainless steel threaded shaft, and automatic thermal overload protection. Its dual-speed capability provides energy-efficient high-speed filtration and low-speed circulation.

Key Specifications

• Part / Catalog Number: B985 
• Brand / Manufacturer: Century (Regal Rexnord)
• Horsepower: 2 - .33 HP (Up-Rated 2.2 THP)
• Speed: 3450 / 1725 RPM (2-Speed)
• Voltage: 230 Volts AC
• Full Load Amperage: 10.0 / 3.5 Amps
• Phase / Frequency: Single Phase (1 Ph) / 60 Hz
• Service Factor: 1.10 S.F.
• Frame Size / Mount: NEMA Y56Y Frame / Square Flange (No Base)[cite: 16]
• Enclosure Type: ODP (Open Drip-Proof / DP)
• Shaft Type: 0.625" Diameter x 0.9" Length Threaded Shaft (303 Stainless Steel)[cite: 16]
• Overall Length ("C" Dim): 14.40 Inches
• Bearings: Sealed Ball Bearings
• Rotation: Counterclockwise Pump End (CCWPE)
• Electrical Design: PSC on High Speed; Capacitor Start / Capacitor Run on Low Speed[cite: 16]
• Thermal Protection: Automatic Thermal Overload Protector
• Ambient Temperature: 50°C Max Ambient Rated

Product Features & Fitment

Designed for direct bolt-on replacement on popular pool pump wet ends (including Sta-Rite Dyna-Jet, Dyna-Pro, Max-E-Glas, and Max-E-Pro series), the Century B985 features a square flange mounting configuration. Its energy-efficient dual-speed design lowers operating costs during standard filtration cycles, while sealed ball bearings and a stainless steel threaded shaft provide long-lasting durability in wet outdoor pool environments.