KBIC-240D KB Electronics DC SCR Chassis Speed Control Drive, 9464Description The KBIC full wave DC motor speed controls are designed for applications demanding excellent performance, high reliability and low cost. Although compact in size (only 4. 30" x 3. 64" x 1. 25"), these controls offer better than 2% regulation over a 50: 1 speed range. The controls are fabricated with components which have proven reliability, including MOV transient protection, which is used to protect the power bridge. Integrated circuitry