Overview Similar Products –> Product Description MK278 Three Phase Fan and Blower **Please Note Product May ship under original Marathon number** (see cross references) 1 hp 1800 RPM, 3.8-3.6/1.9 amps 208-230/460 Volts 60hz. 3 phase Motor NEMA 56 Frame Keyed Shaft 5/8″ Diameter x 1 7/8″ Service Factor: 1.15, Overload protection = None Reversible, Resilient Base Mount, Ball Bearings, Class B Insulation Cross Reference: 5K46MN4087 Marathon G120 Product Videos Custom Field Product Reviews