Marketing InformationPentek offers a full range of 1/3 to 15 hp single phase protectors for residential, commercial, multiple housing and farm water systems applications where a 4 in submersible, two and three-wire motor is used and for aboveground pressure-boost applications. Pentek offers 5 models for your application needs based on hp and motor type - SPP-111, SPP-111-3RL, SPP-231, SPP-233 and SPP-235. Protects pumps - from dry well, overcurrent (jammed impeller), flow restriction (dead head), overvoltage, under voltage, rapid cycling.