The KB Electronics KBMM full-wave DC motor control is the ultimate in reliability and performance. Contains Direct-Fed current limit that helps protect the SCR power bridge against direct shorts and prevents demagnetization of PM motors. 25A SCR's and AC line and armature fusing further enhance reliability. KB's exclusive Plug-in Horsepower Resistor eliminates the need for recalibration when used over a wide range of motor horsepower. Standard features include trimpots for MIN, MAX, IR, CL and Linear ACCEL and DECEL, armature or tach feedback. Auto Inhibit, MOV transient protection, 5k ohm potentiometer and Noise Rejection Circuitry. Options: Auxiliary Heat sink, Barrier Terminal Options, Finger Safe Cover, and SI-6 Signal Isolator.