When your old pool pump motor calls it quit . have a replacement A.O. Smith 1.5-HP 3450 RPM Single-Speed Pool Pump Motor ready to swap in so you can get back enjoying your relaxing day on the water. This 1.5-horsepower full-rated replacement motor for above and in-ground swimming pool pumps has a threaded shaft and fits most pumps that require a square flange motor. It operates on both 115 and 208-230-volts and has a 3450 RPM. The motor features a 1.5 service factor . an automatic surge protector . capacitor start . and an open drip-proof housing for cooler operation. The ST1152 pool pump motor is compatible with pump series models like Sta-Rite Dura-Glas . Dura-Glas II . Max-E-Glas . Max-E-Glas II . Dyna-Glas . and Max-E-Pro . Hayward Max-Flow II . Pentair Whisper-Flo . Challenger . Ultra-Flow . Pinnacle . and Anthony AR2. A.O. Smith Century offers the very best in US-manufactured electric motors. With a comprehensive line of electric motors for commercial . industrial . and residential pump and general purpose applications . century is a highly recognized brand in the leisure water industry for its breadth of product offering . quality . and reliability.