The KBIC-125 is an adjustable speed DC Drive. It will control motors between 1/100-3/4 HP (1.5 HP w/aux. Heat-sink) by inserting the proper Plug-in Horsepower Resistor. The KBIC-125 motor speed control is designed for 90 VDC PM and Shunt motors. Speed range is 50:1 with load regulation of 1%. Features include Auto Inhibit? Voltage Following MOV transient protection 5K speed pot and trimpot adjustments for Min Max Accel IR and CL. Options include Auxiliary heat sink AC Line and Armature Fuse Kit Barrier Terminal Board RFI/EMI filters and Signal Isolation (model SI-5). This control is available worldwide from stocking KB distributors. UL CSA CE C-tick. (CCC pending).Dimensions:4.30" x 3.60" x 1.30".