The 1691-GP-20PSB is a 20 HP general purpose electric motor manufactured by Marathon. This motor features an open drip-proof enclosure made of rolled steel, a 3-phase, 60 Hertz design with thermally protected designs, and a four-pole rotation speed of 1750 RPM. The 1691-GP-20PSB has overload protection, a voltage rating of 208-230/460 volts, an efficiency rating of 85.2%, and a M.A.R.E.A. rating of 76.6. Additionally, this motor has a NEMA Design B service factor of 1.15, a torque rating of 82.9 lb-ft, and a full load current rating of 39.5 amps. The 1691-GP-20PSB is suitable for many industrial applications including pumps and fans, as well as other general purpose operations.