美國KB ELECTRONICS的直流馬達驅動器到目前為止仍然是對小體積、低成本有高要求的客戶。應用于對5馬力以下的各類直流電動機的調速和驅動。KB許多的產品都擁有能夠對電機起保護作用：比如KBMM的電流*限電路以及其他的電流反饋閉環(huán)、過載保護等等。

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.