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https://youtu.be/TmfF2UqToJ0 Why this list? Protection reliability makes or breaks MV/HV projects. This guide ranks manufacturers by what matters in real projects: standards conformance, installed base, commissioning experience, serviceability, delivery reliability, and lifecycle support across MV/HV protection, control, automation, and auxiliary relays used in switchgear, digital substations, and industrial power systems. Disclosure: We state our method, show criteria, a