ABB 1SFB536171A1203 Soft Starter PSTX PCB Assembly Module is an ABB-manufactured printed circuit board assembly designed for use within the PSTX family of softstarter devices, identified by part number 1SFB536171A1203 and revision REV 1. The accompanying description notes a related part, 1SFB536168D1203, indicating this component is part of the same PSTX PCB assembly lineage used inside ABB PSTX softstarter units. As a dedicated PCB assembly within the PSTX line, it contributes to the softstart control and protection functions that ABB provides for low-voltage motor-start applications.
