Century® Centurion® Pro HST110 Pool and Spa Pump Motor; 1.1 THP, 3450 RPM, 115/230 V, 56J, Threaded Shaft. When it comes to durability, installer - friendly features, and overall ergonomics, no other replacement pump motor comes close to a superbly crafted Centurion® PRO pool and spa motor. In addition to one of the most reliable switch and governor mechanisms in the industry and premium bearings on both the pump and lead ends of the motor, the innovative hybrid end frame design boasts a new PCB terminal board, voltage change device and a definitive shaft access path. The Centurion PRO design packs best-in-class features into a rugged, accessible layout that improves the installati on experience.