GE-ALSTOM TRANSACTION Effective 2nd November 2015, GE acquired Alstom’s energy businesses. The Alstom content available on this site is for information purposes only.
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S3C Double Side Break Disconnector up to 300 kV


The Alstom Grid S3C is a low profile, reduced phase-to-phase distance double side break disconnector on which the centre insulator rotates to open and close the switch. 

Main Characteristics 

  • Rated voltage from 72,5 to 300kV
  • Rigid and well supported terminal pads permit post insulators and additional space savings
  • Galvanized structural steel channel base assures high strength and rigid design
  • Can be supplied with 1 or 2 earthing switches mechanically or key interlocked with the disconnector blades
  • Customised solutions available: vertical, underhung and phase-to-phase

Key Benefits 

  • Proven reliability
  • Small centre-to-centre distance between poles
  • High performance with reduced phase-to-phase distance
  • Built-in earthing switches and arc restrictors available
  • Corrosion free materials mean virtually no maintenance
  • Easy start-up and commissioning