Rs 429,089

What is a Ring Main Unit (RMU)?

A Ring Main Unit is a compact, sealed switchgear unit used in medium voltage power distribution (typically between 11kV and 33kV). It is designed to connect, disconnect, and protect electrical circuits in a ring-like configuration — hence the name.

An RMU typically includes:

• Two incoming feeders (to form the ring)

• One or more outgoing feeders

• Switches and circuit breakers

• Protection relays and fuses

These components are enclosed in a gas-insulated (usually SF₆ gas) or air-insulated compact unit, providing enhanced safety and reliability.

According to a Ring Main Unit Market report, the industry is expected to grow significantly in the coming years.

How Does an RMU Work?