A Ring Main Unit (RMU) is a totally sealed, gas-insulated compact switchgear unit. The primary switching devices can be either switch disconnectors or fused switch disconnectors or circuit breakers. Different combinations of these primary switching devices within the unit are commonly used.
Our gas insulated Ring Main Units (RMU) are internally arc tested, gas insulated and are the leading medium voltage switchgear ring main units worldwide.
Our RM6 Ring Main Units characterized by their reliability and operational safety, are SF6 insulated. This Ring Main Unit range includes fully extensible and non-extensible options for secondary distribution applications up to 24kV.
The RM6 is a compact unit combining all MV functional units to enable connection, supply and protection of transformers on an open ring or radial network: it is a complete range to meet the needs of all sectors (energy, industry, building, council, mining etc.) RMU’s can be manufactured to any council specification.