Dayton 3BB75 3/4 HP 1-1/2" Submersible Sump Pump 120V AC

Submersible Sump Pump 3/4 HP

The Dayton 3BB75 is a submersible sump pump rated at 3/4 horsepower and 120V AC single-phase power. It is built for residential or light-commercial basement drainage where a permanent installation with a separate float switch is preferred. The cast-iron body and impeller resist corrosion in dirty water, while the carbon-ceramic shaft seal extends service life in abrasive conditions. This unit suits installers who need a robust pump without an integrated switch.

Flow Performance at Increasing Head

Flow rate declines steadily as discharge head rises: 113 gpm at 5 ft, 101 gpm at 10 ft, 92 gpm at 15 ft, and 80 gpm at 20 ft of head. The pump reaches a maximum shut-off head of 37 ft, so it cannot deliver water above that elevation. At 60 Hz the motor draws 10.5 A, providing consistent output during prolonged dewatering cycles rather than short bursts. Buyers who need higher flow at greater lift heights will require a larger-horsepower model.

Thermal and Electrical Characteristics

The motor operates on standard 120V AC household current at 60 Hz, drawing 10.5 amps under load. Cast-iron construction acts as a heat sink, helping dissipate motor heat into the surrounding water during extended runs. No integrated thermal overload switch is mentioned, so external protection should be considered for continuous-duty applications. Installers seeking a quieter thermoplastic housing or lower amp draw for limited circuit capacity should evaluate alternative designs.