The global protective relay market stood at USD 3.8 billion in 2025 and is on track to reach USD 4.0 billion in 2026, before climbing to USD 5.7 billion by 2033, growing at a CAGR of 5.2% between 2026 and 2033. Behind these numbers lies a quieter but more consequential story: the world's power grids are being rewired — not with more copper, but with more intelligence. Protective relays,...