ACH550-01 Main Switch Option +F278 Installation Supplement

This document is a supplement to the ACH550-01 User’s Manual, providing installation instructions for drives equipped with the main switch option +F278 (up to 22 kW, frame sizes R1–R3, IP54). It covers operation principles, safety warnings, cable installation for input and motor cables, and notes that the main switch does not isolate input cables from the AC supply.