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    Ringmaster Celebrates 30 years at the top!

    The ground-breaking product range has supplied safe, usable electricity to businesses for three decades.

    RN2d Catalogue Watch Video
  • 30 years of Great British engineering

    Launched as the Ringmaster Ring Main Unit(RMU) in 1987, the Ringmaster was the first gas-insulated RMU on the UK market. 
    Traditional RMU's had been oil filled making them time-consuming to test and service. The first Ringmaster was safer, smaller, cleaner and easier to operate than the competition. 
    This produced efficiency savings for Schneider Electric's customers and set the standard for the future.

    View Ringmaster RN2d range

Ringmaster timeline

  • 1970's

    Outdoor oil filled ring main unit using HRC fuse switch technology

  • 1987

    First gas-insulated Ringmaster Ring Main Unit (RMU)

  • 1998

    RN2c version launched

  • 2018

    Latest evolutions launched - RN2d, RN6d, RE2d & RE6d - reliable, safe, flexible and smart

  • New Ringmaster RN2d

    Ringmasters RN2d compact, robust design delivers reliable performance, both indoors and outdoors, from commercial applications to the harshest of industrial environments.
    RN2d has a high-level reliability, safety and flexibility. It is an SF6 Insulated Ring Main Unit (RMU) for medium voltage networks up to 13.8kV with improvement guided by customer feedback and design failure mode and effect analysis (DFMEA).

    View Ringmaster RN2d range

Ringmaster RN2d features

Excellence Redefined

  • Reliable

    More robust Switch & Breaker mechanism

    C Type Bushing with improved performance

    New VIP400 relay with advanced protection features

    Earth circuit re-designed for anti-theft 

    VPIS functioning from minimum of 6.6kV

  • Flexible

    Additional test access points for Switch function

    Improved front facia with easy to read mimic


    Easy to install & maintain

  • Safe

    Improved Internal Arc performance 

    Metalised screen tank offers touch proof feature

    Insensitive to harsh environment

    Complies to latest seismic standards

  • Smart

    New Easergy T300 FRTU for advanced communication

    MV/LV control & monitoring 

    Compact & modular, configurable to your needs

    Flexible communication media (ethernet, USB, GPRS, 3G, PSTN, Radio)

    Complies to latest cyber security standards

Ringmaster RN2d catalogue

We are proud to present the new Ringmaster RN2d catalogue, built on its best selling predecessor RN2c.
Download Catalogue
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