AutomationDirect now offers 1 to 10 HP Marathon NEMA premium efficiency XRI® inverter duty motors. These TEFC motors meet or exceed NEMA Premium efficiencies for optimized motor system efficiency, reduced electrical power consumption and improved system reliability. When used on high cycle or long run time applications, NEMA Premium efficiency motors offer substantial energy savings. These inverter duty motors with rolled steel construction and C-face rigid base mounting, utilize ball bearings and are electrically reversible. They are UL recognized, CSA certified, and have a three year warranty. NEMA Premium Efficiency XRI motors start at $310. A wide variety of other Marathon AC variable speed inverter and vector duty motors ranging from ¼ hp to 100 hp is also available. See the full line of Marathon NEMA premium efficiency motors at: http://www.automationdirect.com/marathon-motors.