• The KBMM-225D is 115-208/230 VAC • Designed for 90 and 180 VDC PM and Shunt motors. • Control motors between 1/100-1.5 HP (3.0 HP w/aux. Heat sink) by inserting the proper Plug-in Horsepower Resistor. • The Auxiliary Heatsink (optional) increases the rating of the basic unit. • Speed range is 50:1 with load regulation of 1%. • Features include: - AC Line fuse and Armature Fuse holder - Auto Inhibit - Voltage Following - MOV transient protection - 5K speed pot and trimpot adjustments for Min, Max, Accel, IR and CL. • UL, CSA, CE (C-tick and CCC pending) Patented. • Dimensions: 4.30" x 3.60" x 1.30". • Line fuse: Required • Resistor and armature fuse: Required