Standard Ring Main Units provide load-break switching and short-circuit protection for distribution transformers in MV ring networks. They are typically smaller than main RMUs and used at secondary distribution points, where they feed a single transformer or short cable spur.
Schneider Electric's RM6 (gas-insulated) and SM6 (air-insulated) compact RMUs are reference products in MV distribution worldwide, with sealed-for-life tank construction and standard fault-make / load-break ratings.
For full technical specifications, datasheets, and certifications, refer to Schneider Electric's official product range:
RM6, SM6, FBX
Send us your project specs. Our power engineers will respond with a configured proposal.
Standard RMUs provide load-break switching and short-circuit protection for distribution transformers in MV ring networks. They are typically used at secondary distribution points, feeding a single transformer or short cable spur.
They are rated up to 24 kV and 630 A, with standard 1, 2, 3, or 4-function configurations.
Options include a sealed-for-life SF6 tank or air-insulated construction. Schneider Electric's RM6 is gas-insulated and SM6 is air-insulated.
Yes. Optional remote control and motorisation are available, and the compact footprint suits tight substations.
Typical applications include compound and residential MV networks, commercial building distribution, industrial transformer feeders, and outdoor secondary substations.
The standard 1, 2, 3, or 4-function configurations are selected from the network layout: incoming and outgoing ring cables use switch functions, while each transformer feeder uses a protected function. Our engineers can advise on the right configuration for your scheme.
As authorised Schneider Electric assemblies, the RM6, SM6, and FBX ranges are built to international IEC standards for MV switchgear, with sealed-for-life tank construction and standard fault-make and load-break ratings.
Yes. NLC supports the RMU from configuration and supply through to installation guidance and after-sales service, with motorisation and remote control options for network automation.