The Allen-Bradley SP-151139 Base Driver/Power Supply Board Kit is a vital replacement component for Bulletin 1336 adjustable frequency drives, specifically those with catalog numbers featuring the “B040†code. This assembly includes a base driver power supply and a PCB, ensuring compatibility with drives rated at 60 Amps output, handling 39 KVA at 380 Volts AC, and 48 KVA at 460 Volts AC. Designed to efficiently control 3-phase induction motors, these microprocessor-driven 1336 drives provide precise motor speed adjustments through Pulse Width Modulation and offer digital programming for accurate control, set-up, and operation from both local and remote interfaces, with the ability to report status and fault data via integrated or optional communication modules.