Since 1977, Meidensha supplied some 190 double-break 145kV insulator type VCBs in Japan and overseas. In 2002, we completed verification tests on basic performance of a single-break VCB. Since then, we carried on with improvements for cost reduction and carried out reliability tests, and in 2010, we completed the development of 145 kV insulator type single-break VCB and supplied the first commercial product. This VCB is one of the world highest voltage VCBs as a single-break VCB.

• The world's first 145kV single-break VCB
• High voltage and large capacity (145kV single-break with a short-circuit current breaking capability of up to 40 kA)
• Reduction of the life cycle cost *Compared to conventional double-break products
  Compact (70% reduction in installation base area)
  Light weight (30% reduction in total mass)
  High reliability (30% reduction in operating energy)