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SACE Emax 2 and Tmax XT Mainboard Replacement Procedure

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This document provides step-by-step instructions for replacing the mainboard in ABB SACE Emax 2 and Tmax XT circuit breakers (models E1.2, E2.2, E4.2, E6.2, XT7, and XT7M). It includes critical safety warnings in multiple languages to disconnect power and earth terminals before beginning the procedure, along with visual diagrams for hardware removal and installation.

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