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Home  > Electrical Feedthroughs > BREAKS AND ENVELOPES > VACUUM BREAKS TO 15000V > HV

Product Listing


Vacuum breaks and envelopes are used in vacuum transmission lines to provide an electrical break in the transmission line. Note again that thermal gradients of 25°C per minute must be observed to preserve the life of the seal. Weldable vacuum breaks and envelopes are typically installed using any of three fusing processes - laser, electron-beam or TIG welding.

  • High voltage isolation to 6kV
  • Nominal tube sizes from 3.2 to 11.0mm
  • 2 standard vacuum mounting styles
  • Custom feedthrough configurations available upon request


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Voltage' 3,000 to 15,000V DC
Flanges 304ss
Adaptor See tables
Insulation Alumina ceramic
Vacuum range UHV/HV 1 x10-10 m bar/ 1 x10-8 mbar
Temperature range'
Weld or braze type -100°C to 450°C
CF Flange mounted feedthrough -100°C to 450°C
Dimensions Reference only, subject to change

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