KB Electronics KBDM-14PM DC Motor Speed Control

KB Electronics KBDM-14PM is a full‑wave, solid‑state DC motor speed controller designed for 115 VAC input and available in panel‑ or chassis‑mount configurations. It provides infinitely variable speed control for permanent magnet, shunt‑wound, and universal DC motors, delivering a 0–90 VDC armature output with a maximum rating of 2.5 A at 25°C and up to 1/4 horsepower at 90 VDC. The unit operates on 50/60 Hz mains and carries cUL and UL approvals, packaged in a panel‑mount enclosure that weighs about 0.8 lb. Armature voltage is 90 VDC. Standard features include adjustable minimum and maximum speed trim pots, MOV transient protection, line voltage compensation, and BEMF feedback. Typical applications span pumps, conveyors, welders, dampers, grinders, potter’s wheels, and laboratory mixers. This model is discontinued and no longer manufactured; when sold as PKG B (6220) OEM DC drives it was specified as 120 VAC input with 0–90 VDC output (1/4 HP).