The SafeRing and SafePlus Gas-Insulated Switchgear from ABB are compact, robust, and versatile solutions for secondary power distribution in both indoor and outdoor applications—even in high altitudes and harsh environmental conditions. Fully compliant with IEC standards, these platforms are trusted worldwide for their reliability, safety, and efficiency.

Since 1967, ABB has been pioneering gas-insulated switchgear (GIS) technology. Today, the portfolio bridges tradition and innovation, offering both SF6-based and SF6-free (Air-insulated) versions. With identical interfaces, footprints, and operations, the SF6-free SafeRing Air and SafePlus Air ensure seamless transition while supporting sustainability goals.

SafeRing (RMU) – Standardized Solution

• Compact block-type configurations
• Pre-defined RMU (Ring Main Unit) layouts
• Simplified protection schemes (e.g., self-powered relays)

SafePlus – Flexible Solution

• Metal-enclosed modular switchgear
• Wide range of configuration options
• Full grid automation and advanced protection relays

Insulation Options:

• SF6 Version:
  • Welded stainless-steel enclosure, sealed for life (30+ years lifespan)
  • Leakage rate < 0.1% per year
  • Factory gas-filled and tested for fast, error-free installation
• SF6-Free Version (SafeRing Air / SafePlus Air):
  • Dry air insulation with GWP = 0
  • Proven puffer-type load break switch (LBS) for reliable current interruption
  • Same footprint and interface as SF6 version (no retraining needed)

Customer Benefits:

• Compact, sealed system with long operational life
• Flexible configurations for diverse applications
• Enhanced safety and reliability
• Supports sustainability and regulatory compliance
• Reduced installation time with factory-tested units