History of TOSHIBA Vacuum Interrupters
History of TOSHIBA Vacuum Interrupters List
This table can be scrolled horizontally.
| 1962 | First prototype vacuum interrupters |
|---|---|
| 1965 | First vacuum switches (7.2kV, 100A, 50MVA) |
| 1966 | First vacuum circuit breakers (7.2kV, 600A, 150MVA) |
| 1967 | Start mass production of vacuum interrupters for pole mounted vacuum switches (7.2kV, 400A) |
| 1969 | Develop low surge contact material and start commercial production of 6.6kV vacuum contactors |
| 1974 | First vacuum circuit breakers for arc furnace application (24kV, 750MVA) |
| 1977 | First DC vacuum circuit breakers for nuclear fusion research |
| 1978 | Commercial production of low-surge VCB series |
| 1979 |
Develop 84kV vacuum circuit breaker Develop vacuum switch for bullet train system |
| 1981 | Employ new vacuum furnaces for Brazing in Vacuum |
| 1982 | Commercial production of largest VCB (13.8kV, 3000A, 100kA) |
| 1985 | Compact Gas-Insulated-Switchgear (C-GIS) employing 84kV VCB |
| 2004 | Develop 24kV interrupter for Solid Insulation Switchgear |
| 2006 | Cumulative production exceeds 3,000,000 (Three Million) |
