Available in 1.5, 2, 3, and 5 hp models, 900 rpm ECPM Motors provide full load motor-only efficiency rating of 92–94%. Units maintain efficiency under partial load, making them suited for variable speed fan applications. Benefit of flux focusing stator and rotator technology is ability to be one full frame size smaller than conventional motors. Featuring all-ferrite magnet design, motors are packaged in standard NEMA frame sizes and are compatible with VFDs from most manufacturers.