Allen-Bradley 1336-PB-SP23A

The Allen-Bradley 1336-PB-SP23A precharge board was an integral component for enhancing the performance of compatible AC drives, featuring an input rating of 460 Volts AC and supporting output ratings between 60 and 600 Horsepower. Designed for the 1336 FORCE, PLUS, IMPACT, and PLUS II series, it accommodated multiple frame sizes from D to G, effectively powering a wide horsepower range from 0.5 to 800, depending on the specific drive line requirements. Proper precharge circuit configurations were essential for ensuring stable operation in larger drives, while due care for electrostatic discharge (ESD) sensitivity was necessary to safeguard the board’s functionality. The 1336-PB-SP23A has since been deemed obsolete, succeeded by the 1336-PB-SP23D, but remains a notable component in its lineage of advanced automation solutions.