What is generally true about the interruption capability of gas circuit breakers?

Gas circuit breakers are designed with the ability to quench arcs effectively, which is a critical function in electrical systems. The mechanism employs a pressurized gas, usually SF6 (sulfur hexafluoride), to extinguish electrical arcs that occur during circuit interruption. This high-performance interrupting medium allows gas circuit breakers to manage high current loads and broad voltage applications effectively.

The quenching of arcs is important because, during the interruption of current, a significant amount of energy can create a sustained arc, which can damage equipment. Gas circuit breakers excel in this regard because they rapidly switch off the circuit and effectively cool and isolate the arc, ensuring safe and reliable operation.

Other options may address various aspects of gas circuit breaker technology, but they do not capture the primary advantage that makes option B the most accurate statement about their interruption capability. For instance, while it might be true in certain contexts that gas circuit breakers can be less effective under specific conditions, this does not represent their general effectiveness. Similarly, regarding suitability for high voltage and the requirement for a continuous gas supply, these aspects can depend on the design and application of the specific gas circuit breaker but do not define their core interruption capability.