Vacuum Circuit Breaker. In swichgear the vcb is controlled by electromechanical or numerical relays. Bronze npt pressure vacuum breaker the series 765 pressure vacuum breakers are the series 765 pressure vacuum breakers are used to protect against health hazard and non health hazard back siphon age conditions in industrial plants cooling towers laboratories laundries swimming pools and lawn sprinkler systems.
Even with limited rating say 60 to 100mva they are suitable for the majority of applications in rural areas. A vacuum circuit breaker is a kind of circuit breaker where the arc quenching takes place in a vacuum medium. A breaker which used vacuum as an arc extinction medium is called a vacuum circuit breaker.
It is mainly used for medium voltage ranging from 11 kv to 33 kv.
Bronze npt pressure vacuum breaker the series 765 pressure vacuum breakers are the series 765 pressure vacuum breakers are used to protect against health hazard and non health hazard back siphon age conditions in industrial plants cooling towers laboratories laundries swimming pools and lawn sprinkler systems. We ll explain both situations in more detail below. If your vacuum always trips the breaker the circuit most likely has a electrical arcing problem. If your vacuum occasionally trips the breaker the breaker is most likely just nuisance tripping vacuums are notorious for causing afci nuisance trips.
