Solid-sealed Pole Type

Embedded Pole type
The sealed pole type is an independent component that encapsulates the vacuum arc chamber, conductive connection or terminal with solid insulating material. The sealed pole type circuit breaker has many advantages, such as small size, simple structure, easy maintenance, long life, etc. It is widely used in power systems.
Advantages of the sealed pole type:
1. High reliability: The internal design of the vacuum circuit breaker eliminates impurities in the air, reduces the possibility of flashover and breakdown caused by instantaneous overvoltage, and greatly improves the stability and safety of operation. In addition, the vacuum circuit breaker has a strong arc extinguishing ability, which can effectively isolate the fault point and ensure the normal operation of the power system.
2. Simple maintenance: There is no wearing part inside. Compared with traditional air circuit breakers, it does not need to maintain and replace wearing parts such as carbon brushes and springs frequently. It only needs to regularly check the status of the mechanical part, check the flexibility of the operating mechanism, and perform necessary cleaning and lubrication. This can not only save maintenance costs, but also save time and human resources.
3. Simple structure: It has a modular design, fewer detachable parts, fewer overlapping surfaces of conductors, and fewer connecting bolts, which makes the structure simple and greatly improves the reliability of the circuit breaker.
4. Strong insulation rod capacity: It converts surface insulation into volume insulation, which reduces the impact of the environment compared to air insulation and greatly improves the insulation strength.