What is VCB? VCB stands for Vacuum Circuit Breaker. In vacuum circuit breakers, the vacuum is used as the arc quenching medium. Vacuum offers the highest insulating strength. So it has far superior arc quenching properties than any other medium (oil in oil CB, SF6 in SF6 circuit breaker ).
Nowadays, vacuum circuit breakers applications to not only medium voltage power systems but also in high voltage substations or transmission systems. It is because of VCB’s extremely advantageous characteristics such as high interruption capability, long operation life, safety and high cost-performance.
The Vacuum Circuit Breaker (VCB) is a switching device capable for operational switching (on-off operations) of individual circuits or electrical equipment in normal or emergency modes with manual or automatic control, made for a medium voltage of over 1 kV based on the principle of quenching an electric arc that occurs when the contacts open in a vacuum gap. <
The development of power engineering and the transition to higher operating voltages required the development of switching technology, especially switches - devices capable of interrupting short-circuit currents. Simply opening the contacts in the air did not solve this problem; new technologies were needed. The range of operating voltages used in the power industry is increasing, and this growth is now supported by the economic benefits of switching to higher transmission voltages.
Custom Vcb Circuit Breaker can be customized to fit your specific application requirements while reducing maintenance costs and improving reliability.
Gear is configured to meet any system or application need
Switches and fuses never need adjusting, programming, or dielectric testing
Utility-grade design withstands time and the elements
Preassembled and simpler construction requirements
Lower up-front and maintenance costs than metal-clad switchgear
Fuses offer faster fuse-clearing time and reduce system stress compared to circuit breakers