Ring Main Units

A Ring Main Unit (RMU) is a compact, enclosed switchgear used in medium-voltage power distribution networks, typically ranging from 11 kV to 36 kV. It is designed to ensure continuous power supply by connecting and protecting transformers and other electrical equipment in a ring-shaped network. RMUs feature load break switches, circuit breakers, and protective relays, enabling easy switching and fault isolation without disrupting the entire network. Their compact design makes them ideal for use in urban areas and industrial facilities where space is limited. RMUs enhance the reliability, safety, and efficiency of power distribution, making them essential in modern electrical systems.