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PSTX30–PSTX370 Softstarter PCBA Replacement Instruction

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This document provides step-by-step instructions for replacing the PCBA (Printed Circuit Board Assembly) on ABB PSTX30 to PSTX370 softstarters, including part number 1SFA899300R1021. It contains critical safety warnings in multiple languages, torque specifications, and ESD protection requirements for qualified electricians performing the service.

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