(RMU) Ring Main Unit assembly line

Ring Main Unit (RMU, also known as ring‑network load switchgear) is core power supply switching equipment applied in medium‑voltage distribution networks (mainly 10 kV/20 kV). Featuring a metal‑enclosed enclosure, it integrates components such as load switches, fuses, earthing switches and instrument transformers. It is specially designed for power distribution, line protection, fault isolation and flexible switching operations in ring‑type power supply systems.