Vacuum Interrupter Tubes

Alumina Systems GmbH produces a broad standard program of ceramic tubes for vacuum interrupters and step switches. As our customer you benefit from our more than 30 years of experience in producing samples until serial products. All vacuum tubes can be customized. If a longer electric creeping distance is required the tubes will be grooved outside.

Product specifications:

  • Dimensions: to Ø 300 mm 
  • Type range: ceramic vacuum tubes for interrupters and step switches 
  • Voltage to 42 kV, condenser tubes
  • material: Al2O3 96 %
  • External ceramic surface glazed
  • Metallization tensile strength > 200 N/mm2 (mean value)