It is a good idea. I like it -- I mean your site's idea about the question may be the main difference between an A.C.B (Air circuit breaker) and V.C.B (vacuum circuit breaker) is the media of arc quenching.
A circuit breaker, like a switch making and breaking the flow of current in the circuit`s conductor, but in high voltage applications, it is a different process. The amount of current and the number of amperes are much longer than those in low voltage.
This large current requires a media for arc extinguishing caused by the arc of breaking process. In an air circuit breaker, this medium is the environmental atmospheric air. This medium is changed by vacuum arc extinguishing.