The global merging unit market is projected to grow from USD 367 4 million in 2025 to USD 477 7 million by 2030 at a CAGR of 5 4 during the
The global merging unit market is projected to grow from USD 367.4 million in 2025 to USD 477.7 million by 2030 at a CAGR of 5.4% during the forecast period. A merging unit (MU) is the main instrument in digital substations that changes the analog signals from the current transformers and voltage transformers into digital sampled values. It uses either IEC 61850-9-2 or IEC 61869-9 standards. Thus, it can make measurements accurate and time-synchronized, and it also sends data to the protection relays, bay control units, and SCADA systems via fiber-optic communication. The merging unit market is growing as utilities and industries are moving from copper-wired secondary systems to digital architectures, which increase reliability and decrease engineering complexity. Standalone MUs provide the means for modular upgrades and retrofits. Meanwhile, integrated MUs facilitate compact designs of new substations. The adoption of MUs is mainly in medium-voltage networks due to the extensive digitalization of distribution substations.
