Lucy Electric is a global leader in secondary power distribution solutions with over 100 years’ of industry experience.

Specialising in high-performance switchgear, we develop and supply intelligent solutions and services for utility, industrial and commercial applications.

This enables the safe and reliable distribution of energy to homes and businesses worldwide.

 Lucy Electric is a market leader in the design and manufacture of high-performance medium voltage SF6 & Non-SF6 gas and oil insulated RMUs for transformer or ground mounted applications.

All RMUs are suitable for both indoor and outdoor locations and can operate in even the most extreme environmental conditions.

SF6 insulated with vacuum circuit breaker protection

Medium voltage – Ring main units

Front cable termination, SF6 insulated RMU with up to 4 switching functions in a single stainless steel enclosure


  • 36 kV with up to 630 A ratings
  • Extensible and non extensible range witha wide choice of configurations
  • Any combination of load break switches and vacuum circuit breakers available
  • No on-site SF6 gas handling for installation
  • AF and AFLR internal arc protection
  • Intuitive single line mimic diagram
  • Horizontal cable terminations with DIN 400 Type C bushings
  • Front access earth and test facility
  • Integrated motorisation for remote control operation
  • Vacuum circuit breaker protection with relays
  • Suitable for Indoor (IP41) and outdoor (IP54) applications
  • Integrated Gemini 3 RTU for easy SCADA connection, with optional automatic transfer scheme (ATS)
  • Fully interlocked, anti-reflex mechanisms with padlocks
  • Maintenance free with 30 years life expectancy

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