CAST-IRON FRAMEThe OME series ac motors are industrial-duty, three-phase, 208-230/460 V motors and are available in 1-5 hp and speeds of 3,600, 1,800 and 900 rpm. These totally enclosed fan-cooled (TEFC) T-frame motors have cast-iron frames with a ribbed design and feature class F insulation. They are inverter-duty capable with a 5:1 speed turndown for variable torque applications and a 2:1 speed turndown for constant torque use. The product is CE-compliant and comes with a two-year warranty.