Isomax S3 and S5 MCCB Disassembly Instructions for ENEL Secondary Substations

This document provides disassembly instructions for ABB SACE moulded case circuit breakers, models Isomax S3 and S5, in customized versions for ENEL secondary substations. It covers required personal protective equipment, necessary tools, and applies to specific ENEL serial numbers for circuit breakers equipped with VDS devices and motor operators.