A.O. Smith Century 56 Frame 4 HP Spa Motor - B2235

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A.O. Smith Century 56-Frame 4 HP, Spa Motor B2235 combines the proven performance of the Century Centurion 56 frame platform with the next generation of features for increased reliability, added performance, premium efficiency, and serviceability.

This is the first full line of upgraded spa motors... the "best of the best" from Century.


  • Century 56 Frame Energy Efficient Spa Motor
  • E-Plus New Centurion Design
  • No-adjust start switch that is rated for over one million cycles for motor longevity
  • Unique electrical design with a unique, advanced cooling system that helps extend the life of the motor
  • Heavy-duty shaft made from 303-grade stainless steel helps prevent corrosion
  • EZ wrench access that doesn't require the removal of the wiring compartment canopy
  • Angled terminal makes wiring connections a breeze
  • Patented voltage change dial for easy voltage selection
  • Patented bonding lug for easy ground connections
  • Patented bearing lock clip for assured bearing retention
  • All motors are rated 115/208-230 +/-10% volts to handle voltage variations throughout the US and Canada
  • Double sealed bearings and, on shaft end, an integrated Patented SmithSealTM bearing protector to resist water damage
  • Rugged motor enclosure system for enhanced durability and premium protection against corrosion
  • A full class F insulation system and 50° C ambient capability for increased motor life over class B insulation systems
  • 3/8-16 UNC-2A Threads Includes Slinger
  • PSC on High Speed


  • Horsepower: 4
  • Speeds: 2 Speed (Low and High)
  • Volts: 230
  • Amps: 3.0/12.0
  • RPM: 3450 High Speed and 1725 Low Speed
  • Frame: 56Y
  • Series: Centurion Energy Efficient
  • Full-Rated
  • Thru Bolts: Four on a 5.812 Bolt Circle

Compatible for use with the following pumps:

  • Waterway Spa Pumps

Pool Supply Delivery Motor Service:

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