A circuit breaker in which the interruption occurs in air.
You've likely seen a circuit breaker in which the interruption occurs in air if you have ever poked your head into a large mechanical room or looked at the main power distribution board of a commercial building. While the name sounds a bit like a technical mouthful, the concept is actually pretty straightforward. We're talking about a device that has the heavy-duty job of stopping electricity from flowing when something goes wrong, and it does that job using the very air we breathe. ...