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Our off-the-shelf DC Drives provide variable speed for DC motors from sub-fractional to 2 horsepower.* They are available in 115 and 208/230 Vac - 50/60 Hz with 1Ø input and are housed in a NEMA 1 enclosure. A variety of optional accessories are also available to meet the most demanding applications.

*For OEM applications, custom drives are available.

KBWM SCR Drive – NEMA 1

The KBWM Series of DC Drives are rated for 1/100 to 3/4 horsepower motors and are housed in a NEMA 1 enclosure. These drives are the compact version of the Multi-Drive (KBMD). This unidirectional SCR drive utilizes the KBMM speed control module, which prevents motor failure due to demagnetization. It requires a Plug-in Horsepower Resistor to operate and includes an AC line fuse and an Armature fuse holder.* This drive also contains auto inhibit which provides a smooth, safe start during rapid switching of the AC line and a terminal block to facilitate wiring. 

*Plug-In Horsepower Resistor and Armature fuse supplied separately.

KBMD SCR Drive – NEMA 1

The Model KBMD-240D, also called Multi-Drive, is rated for 1/100 to 2 horsepower motors* and is an SCR drive housed in a NEMA 1 enclosure. It utilizes the KBMM speed control for its electronics. It handles both 115 and 208/230 Volt AC line inputs by setting the built-in Dual Voltage Switch. The single model can be used on a wide range of motor horsepower by inserting the appropriate Plug-In Horsepower Resistor, which is required to operate this drive. It includes an AC line fuse and an Armature fuse holder.** This drive also contains auto inhibit which provides a smooth, safe start during rapid switching of the AC line.

Options: Auxiliary Heat Sink, Forward-Brake-Reverse Switch Kit**.

*An Auxiliary Heat Sink is required when operating motors above ¾ HP at 90 Vdc and 1½ HP at 180 Vdc.
**Plug-In Horsepower Resistor, AC line fuse and Armature fuse supplied separately.