BN51 Century 2 hp 3450/1725 RPM 48Y Frame 230V 2-Speed Pool & Spa Electric Motor Century # BN51

BN51 Century 2 hp 3450/1725 RPM 48Y Frame 230V 2-Speed Pool & Spa Electric Motor

This Century BN51 motor is a 2 horsepower, 2-speed electric motor designed for above ground swimming pools and spas. It serves as a direct replacement for various pool and spa pump motors, including models from Hayward, Waterway, Aquaflo, and Dynamo.

Key Specifications

• Horsepower: 2 HP
• RPM: 3450 / 1725
• Voltage: 230V, 60 Hz
• Amperage: 10.5 / 2.6 Amps
• Frame / Diameter: 48Y Frame
• Shaft Dimensions: 1/2" diameter with threaded end
• Rotation: Counterclockwise (CCW) facing the shaft
• Bearings: Ball Bearings

Product Features & Fitment

This motor features a thru-bolt mount design, where the pump attaches directly to the motor using motor thru bolts. The 48Y frame has a 5 1/8" bolt circle center-to-center across the shaft. It includes a flat rigid base welded to the motor case for stable mounting. The motor is non-reversible and includes auto overload protection. Wiring connection details are provided on the motor nameplate.

This motor is equivalent to US Electric SPH20FL2CS and Dayton 5PB54 models. Please verify local and state regulations before purchase, as this motor does not comply with California Title 20 or New York NYSERDA efficiency standards and may be restricted from shipment to those states.

Warranty

• Pool Motor Manual
• Seal Reference Chart