The Allen-Bradley SP-151142 Base Driver/Power Supply Printed Circuit Board Kit is engineered as a direct replacement for the power supply boards in the Bulletin 1336 classic adjustable frequency drives, which are renowned for their ability to precisely control 3-phase induction motors across various industrial settings. This kit is part of the 1336 accessory family and supports the high performance of the drives, offering a 3-phase PWM adjustable output frequency that matches motor speed requirements. Compatible with 1336 drives carrying a B100 rating code, the SP-151142 operates within a 380 to 4650 Volts AC range, delivering up to 120 KVA at 460 Volts AC. Installation is straightforward, thanks to its compact design featuring 10 jumper connectors, an integrated microprocessor, and an on-board transformer, making it an essential component for maintaining the drive's advanced functionalities.