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KB Electronics NEMA-1 IP-50 AC Drives 

KB offers 4 Variable Frequency NEMA 1/IP 50 Drives in two categories.

The following features are common to both drives:


Sensorless Flux Vector Compensation with Static-Auto-Tune to provide excellent speed regulation with high torque loads throughout the entire speed range. Auto energy saving at light loads. Smooth motor torque.

They are designed to be surface mounted in applications that may or may not require digital programming and a digital display. Hybrid KBMA & Digital KBMK NEMA 1/IP 50 AC Drives provide variable speed control of standard 3 phase AC induction motors from 1/8 to 1 horsepower.

The following are their differences:

  1. There are 2 KBMA Hybrid* AC Digital Drives which use an Analog Interface to set motor speed and trimpots to make the most common adjustments - minimum and maximum speed, acceleration, deceleration, Current Limit and Slip compensation.

    In addition, a variety of optional KB Electronics AC Drive Accessories including: Forward –Stop-Reverse switch and Signal Isolator with Auto/Manual switch.


  2. There are 2 KBMK AC Digital Drives with CSP** which use a digital keypad with displays to set over two hundred programmable functions.

    In addition, a variety of optional KB Electronics AC Drive Accessories including: IODA Input/Output Multi-function Expansion Board and Signal Isolator.
Both models are enclosed in a Rugged Aluminum NEMA 1/IP 50 Enclosure with Easy-Off Cover.

*Hybrid, A Digital Drive with Analog Interface
** CSP, Common Sense Programming