How Vacuum Circuit Breakers Work

A vacuum circuit breaker is an electrical device used to disconnect or connect current in a circuit. It operates by using a vacuum environment to isolate the current, thereby disconnecting the circuit. When the circuit breaker opens, current forms an arc between two electrodes. The vacuum environment effectively attenuates and controls the arc, ensuring complete interruption of the current. Vacuum circuit breakers are commonly used in high-voltage and high-power circuits and offer excellent arc-extinguishing performance and durability.