Assertion: circuit's circuit breaker | /r/CapableOf | use air
Facets:
value: as the medium
type: MANNER
Source sentences:
text: Different circuit breakers use vacuum, air, insulating gas, or oil as the medium the arc forms in.
text: The circuit breaker which used air and oil as an insulating medium, their arc extinguishing force builds up was relatively slow after the movement of contact separation.