|switch = circuit_breaker|
|A Circuit-breaker is the only kind of power switch which offers enough protection (safety) against abnormal power currents and can be operated when bound circuit is loaded.|
|Used on these elements|
|Tools for this tag|
A Circuit-breaker (441-14-20) is a kind of power=switch. This device is capable to break both normal or abnormal power currents but can't offer an enough protection to high voltages when open. A circuit breaker can often be found in power=substations and is often associated with a disconnector or earthing switch which brings this protection in open state.
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Have a look : 69813552
|Both coupling and bay circuit breakers have the same tagging. Even if two chambers can be seen on aerial picture, please use only one as shown with the following tags:||400kV busbar coupling dual circuit-breaker. Such devices actually use SF6 as insulation gas.|
|400kV dual circuit-breaker protecting a power bay (where power lines connect to substations). Such devices actually use SF6 as insulation gas.|
||A dual switches association in distribution substation. The circuit-breaker is on the transmission side and assume the power grid protection. It has to be operated prior to the disconnector since the power line is surely loaded. The disconnector switches are operated by the distribution operator in maintenance operations when the substation needs to be forced offline.|
- Power switching extension approved proposal.