3814881

Information

• Patent Grant
• 3814881

• References
• Source

• Patent Number

  3,814,881

• Date Filed

  Not available

• Date Issued

  Tuesday, June 4, 1974
  50 years ago

• CPC

  • H01H33/66 - Vacuum switches
  • H01H33/022 - particular to three-phase circuit breakers
  • H01H2033/024 - with a triangular setup of circuit breakers
  • H01H2033/566 - Avoiding the use of SF6
  • H01H2033/6668 - with a plurality of interruptible circuit paths in single vacuum chamber

• US Classifications

  • 218 - High-voltage switches with arc preventing or extinguishing devices