Fixed sealed circuit breaker is a shortened form of fixed sealed pole type circuit breaker. Sealed circuit breakers are also vacuum circuit breakers, which differ from ordinary vacuum circuit breakers only in the packaging material. However, when it comes to deeper technical issues, there are significant differences between sealed circuit breakers and ordinary vacuum circuit breakers.
Voltage Fixed Indoor Vacuum Circuit Breaker is an encapsulation process where epoxy resin is poured outside the original vacuum bubble. Compared with traditional assembled poles, fixed sealed poles have significantly reduced parts, simpler structure, and easier installation, simplifying the manufacturing process of circuit breakers and greatly improving their reliability and stability.
Due to the vacuum arc extinguishing chamber being embedded in epoxy resin insulation material, it transforms the original surface insulation into volume insulation, so no further treatment is required. The fixed sealing pole can achieve high insulation strength, which is more conducive to the miniaturization design of circuit breakers and switchgear.
The vacuum arc extinguishing chamber and related conductive components are simultaneously embedded in epoxy resin solid insulation material, shielding it from external environmental influences. It is completely maintenance free during the product's service life, making it highly adaptable and widely applicable in various fields such as chemical, metallurgical, mining, etc.
Although its production cost is relatively high, the main circuit that encapsulates the low resistance vacuum arc extinguishing chamber and outlet socket in epoxy resin improves the insulation level and anti-pollution ability, eliminating the influence of condensation.
In response to the usage environment of switchgear, adopting a fixed sealed pole form can better meet the needs of more users, increase the reliability of switchgear, and improve the power supply reliability of the power grid.
