Vacuum Circuit Breaker Parts

The contacts of a vacuum breaker are enclosed in a ceramic envelope or bottle that is evacuated to an extremely low atmospheric pressure approximately 0023 in.

Vacuum circuit breaker parts.

12 holds the contacts closed due to parts 2 5 6 11 and 14 being placed in an interference fit. A vacuum circuit breaker is such kind of circuit breaker where the arc quenching takes place in vacuum. The vacuum circuit breaker interrupts the current in a vacuum. But still it is a developing technology.

Vacuum circuit breakers interrupt the arc by denying it air. When the breaker operates the moving contact separates from the fixed contact and an arc is struck between the contacts. Even though the vacuum in vacuum bottles is very good it isn t perfect so some arcing does take place. Even with limited rating say 60 to 100mva they are suitable for the majority of applications in rural areas.

As time goes on the size of the vacuum interrupter has reduced from its early 1960 s size due to different technical developments in this field of engineering. By embedding the vacuum interrupter in epoxy the assembly is substantially tougher and better suited to withstand impact moisture dust and other. Is pleased to announce the development and availability of replacement vacuum interrupter pole assemblies compatible with older power vac circuit breakers using encapsulated embedded vacuum interrupters. A wide variety of parts of vacuum circuit breaker options are available to you such as 3 4 and 2.

You can also choose from high voltage vacuum and moulded. For higher voltage vacuum technology has been developed but not commercially viable. The trip latch 11 holds the. Vacuum circuit breaker vmg series embedded pole vacuum circuit breakers are applicable to rating of 12kv 24kv three phase ac 50 to 60hz indoor switchgear and serve as protection and control units for industrial and mining establishments and transformer substation equipment.

The working of vacuum circuit breakers is briefly explained below. Vacuum circuit breakers are employed for outdoor applications ranging from 22kv to 66kv. The technology is suitable for mainly medium voltage application. The pressure inside the vacuum interrupter is approximately 10 4 torrent and at this pressure very few molecules are present in the interrupter.

In comparison to various other insulating. In a pure vacuum there can be no arc. Vacuum circuit breaker has a high insulating medium for arc extinction as compared to the other circuit breaker.