The SP-151131 Kit by Allen-Bradley/Rockwell Automation is an essential component for the 1336 series adjustable frequency drives, incorporating a base driver board and a power supply PCB. Designed for integration within the drive's enclosure, this kit is particularly compatible with B003 constant torque drives operating at 380 to 460 Volts AC and requiring an input current of 46 Amps. Furthermore, it provides a foundation for terminal blocks TB4 and TB6, facilitating drive power operations from an external voltage source, and enables low voltage control functionalities even in the absence of bus voltage, with troubleshooting solutions including resetting to factory defaults or board replacement for addressing issues like DSP Checksum failure.