美国KB ELECTRONICS的直流马达驱动器到目前为止仍然是对小体积、低成本有高要求的客户。应用于对5马力以下的各类直流电动机的调速和驱动。KB许多的产品都拥有能够对电机起保护作用：比如KBMM的电流*限电路以及其他的电流反馈闭环、过载保护等等。

KB Electronics, Inc. dominates the fractional to 3-horsepower DC Motor Speed Control market. DC motors and controls still offer the user the ultimate in high performance with small size and low cost. KB controls offer you compliance with UL Recognition for the USA and Canada and European CE Approvals. They also have many control benefits not offered by the competitors. This is not by accident.