Past and future circuit breakers with different technologies

Past and future circuit breakers with different technologies and the advantages and disadvantages:

1. Air circuit breakers: Currently the production of these products has been stopped.
2. SF6 gas circuit breakers :The first equipment was introduced in 1950.The production of these products is still ongoing, and their production is uncertain in the future due to global warming(GWP).
3. vacuum circuit breakers :VCBs Actually, they entered the market in 1980 .A 145 kV vacuum breaker is already available, and the next steps will be a 245 kV double break and a 550 kV with four vacuum interrupters immersed in oil.
4. SF6 alternative gas circuit breakers
5. High voltage DC circuit breakers

what s your idea about switching equipments in future?

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