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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S2DA Centre Break Disconnector up to 550kV


Centre break disconnector

The Alstom Grid S2DA centre break disconnector is one of the most commonly used disconnector types in the world thanks to its simple, but efficient, design on which both insulators rotate to open and close the switch.

Main Characteristics 

  • Rated voltage from 72,5 to 550kV
  • Reliable in adverse operating conditions such as high winds and heavy ice
  • Always stable in the close position during short circuits
  • Flex technology for inspection free, long term operation (no need for sliding or rotary contacts)
  • Galvanized structural steel channel base assures high strength and rigid design
  • Supplied or easily retro-fitted with 1 or 2 earthing switches
  • Customised solutions available: parallel, in-line, diagonal, vertical, underhung, phase-to-phase

Key Benefits 

  • Cost effective
  • High short circuit carrying capacity
  • Low operating torque
  • Corrosion free materials mean virtually no maintenance
  • Easy start-up and commissioning