KCVB41-7.2kV series Permanent mining magnetic mechanism AC high voltage vacuum circuit breaker is suitable for the 6kV voltage class three-phase AC 50HZ power system, so as to ensure safe & reliable control and protection of load. It may carry out frequent operation in the rated current range, it can also carry out multiple times of on-and-off for rated short circuit. This is the next-generation product developed by the company through summarizing many years of users' experience and designed based on the improvement opinions on existing 7.2kV product, therefore, we have remarkably improved the product both in performance indexes, reliability and easy maintenance. It is more suitable for general mining or high-voltage explosion-proof power distribution devices in the feeder system of coal mines. Equipped with high voltage vacuum circuit breakers with permanent-magnet operating mechanism containing the latest technology, it is famous for reliable work and good performance, it is replacing the old technologies to become a mainstream product on the market. We welcome the users to choose for usage.

Product features:

Main circuit

? The vacuum switch tube adopts products of domestic well-known manufacturers. They have matured technology, reliable quality and good market credit.

? The complete machine has small volume and reasonable structure, it is easy to install and use, it is domestic pressure resistant product with smallest volume。?

? The main circuit power frequency withstand voltage is designed according to 42kV and it can be used safely by replacing the old products。

Electromagnetic system

? It uses bi-stable permanent magnetic mechanism, The brake-opening operation is more convenient, the brake-opening spring combines with the permanent magnet, therefore the brake-opening characteristics match better with the vacuum switch tube characteristics. The clear and concise control circuit makes the circuit breakers more economic, and practical and easy to use。

? The undervoltage tripping device is stable and reliable. Equipped with an integrated manual tripping device, the manual brake-opening is light and reliable。

Movement structure

? Through adopting self-aligning bearings, the spindle support becomes more flexible, the load-carrying capability is seizure-free, with small axial movement, therefore, the movement performance and consistency have been improved。?

? The reasonable action mechanism ensures coaxiality of the conductive electric pole during axial movement. This improves the performance and reliability of the breaker。

? It has enhanced the contact pressure of the main contact and improved electrical properties and movement characteristics. The indexes are superior to other similar products。

Easy use and maintenance

? The secondary circuit adopts multi-core aviation plugs, it has convenient connection, in addition, it is safe & reliable。

 

Chick：KCVB41-7.2kV PDF