Global Switchgear Market Size, Share, And Business Benefits By Voltage Type (Low Voltage, Medium Voltage, High Voltage), By Insulation (Air, Gas, Oil, Vacuum, Others), By Current (AC, DC), By Installation (Indoor, Outdoor), By End Use (T and D Utilities, Commercial and Residential, Industrial), By Region and Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends, and Forecast 2025-2034