High voltage circuit breaker (or high voltage switch) not only can cut off or close the no-load & load current in high voltage circuit, but also can cut off the load current and short-circuit current through the action of relay protection device when the system failure occurs, it has the arc extinguishing structure and sufficient circuit cutting capacity.
Include: Oil circuit breaker (Multi - oil circuit breaker and Oil minimum circuit breaker), SF6 circuit breaker, Vacuum circuit breaker, and compressed air circuit breaker.
