FEATURES • MAX GUARD® Class H insulation system • Constant torque operation from 0 to base speed on vector drive, including TEFC (On Volts/Hertz drives, TEFC motors are limited to 20:1 constant torque • Constant HP operation to twice base speed (143-256 frame);1.5 times base (all others) • Optimized for operation with IGBT inverter (NEMA Design A) • Normally closed thermostats (one per phase, class F) • Blue Chip quality, cast iron frame and brackets • Patented “fracket” design (TEBC enclosure) • Separate power supply required for blower motor • Model 284THFPA8086