KBMM-225 Adjustable Speed DC Drive will control motors between 1/50-1.5 HP (3.0 HP w/aux. Heat-sink) by inserting the proper Plug-in Horsepower Resistor®. The KBMM-225 motor speed control is designed for 180 VDC PM & Shunt motors. 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, Decel, IR and CL. Options include Auxiliary heat sink, Barrier Terminal Board, RFI/EMI filters and Signal Isolation (model SI-6). This control is available worldwide from stocking KB distributors. UL, CSA, CE, C-tick. Patented.