Assertion: circuit breaker's contact | /r/MadeOf | a tungsten/copper alloy
Facets:
value: in sf6 breakers
type: OTHER
value: commonly
type: TEMPORAL
Source sentences:
text: In SF6 breakers, the arcing contact is commonly made of a tungsten/copper alloy and is burned off and becomes shorter for each interruption of current.
text: In SF6 breakers, the arcing contact is commonly made of a tungsten/copper alloy and is burned off and becomes shorter for each interruption of current.