KB AC Inverter Drives

For 40 years KB has dedicated itself to produce the best variable speed controls for AC and DC Drives. From the beginning, their philosophy of “You get more value with KB Drives” has never changed. KB’s goal was to give our customers more benefits, better reliability, at lower prices. Although KB originally catered to OEM’s the early 1980’s brought about the beginning of a distribution network and their broad-based product line has gained worldwide acceptance. These off-the-shelf standard and custom AC and DC motor speed controls marketed under the Penta-Power trade name.

KB’s broad range of analog style Penta Power VFDs and our new line of Genesis Digital Drives can provide you with off-the-shelf solutions for almost any application.

KB Electronics

KBAC Drive


The KBAC Series of VFDs consist of 5 inverter models ranging from 1/8 through 5.0 horsepower housed in heavy duty, NEMA-4X (IP-65) die cast aluminum washdown/watertight enclosures for indoor or outdoor use. These analog style AC Drives do not require programming. Jumper selectable functions and simple trimpot adjustments make the KBAC Series quick and easy to use. For OEM applications, these Drives can be factory programmed for many demanding requirements.

KBMA Drive


The KBMA Series of VFDs consist of 2 inverter models rated from 1/8 through 1.0 horsepower housed in a NEMA-1/(IP-40) aluminum enclosure. The KBMA-24DF contains a built-in AC line Class A RFI/EMI filter. Jumper selectable functions and simple trimpot adjustments make the KBMA Series quick and easy to use. For OEMs these Drives can be customized for many demanding applications.

KBDA Drive


The KBDA Series of Digital VFDs consist of 5 inverter models ranging from 1/8 through 5.0 horsepower housed in heavy duty, NEMA-4X (IP-65) die cast aluminum washdown/watertight enclosures for indoor or outdoor use. Digitally programmable, all similar functions are presented in common groups making these Adjustable Frequency Drives easy to install and operate. A large 4-digit display provides easy-to-read operating parameters and programming functions.

KBVF Drive


The KBVF Series of Adjustable Frequency Drives consist of 13 models ranging from 1/10 thru 5.0 horsepower. These chassis/IP-20 style Drives are ideal for OEM applications where digital programming and displays are not required. Simple trimpots and jumpers allow for quick and easy tuning for each application. All Drives can be factory customized to your unique application due to their broad programming capabilities, including PLC functions.

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