A vacuum circuit breaker is an electrical switching device that uses a vacuum as the arc-quenching medium to interrupt current in power system.
Product Description:
ZW43 – 12 vacuum circuit breaker is an outdoor high – voltage AC switchgear with a rated voltage of 12kV and a three – phase AC frequency of 50Hz. It is mainly used to break and close the load current, overload current and short – circuit current of the power system.
This circuit breaker is composed of the circuit breaker body and the permanent – magnet mechanism controller. It adopts a three – pillar structure, and the vacuum interrupter is connected to the operating mechanism through an insulating pull – rod, with stable and reliable performance. The vacuum interrupter is cast into an organic whole with the main conductive circuit and insulating support by epoxy resin through the APG process, and is encapsulated with silicone rubber, which has good anti – condensation performance.
Product Parameter (Specification)
| No | ltem | Unit | Number of values | |
| 1 | Rated voltage | kV | 12 | |
| 2 | Rated current | A | 630 1250 | |
| 3 | Rated frequency | Hz | 50/60 | |
| 4 | Lightning impulse withstand voltage | kV | 75 | |
| 5 | 1 min power-frequency withstand voltage | kV | 42 | |
| 6 | Rated short-circuit breaking current | Ka | 16/20/25 | |
| 7 | Rated short-circuit making current(peak value) | Ka | 40/50/63 | |
| 8 | Rated short-time withstand current | Ka | 16/20/25 | |
| 9 | Rated withstand current(peak value) | Ka | 40/50/63 | |
| 10 | Rated operating sequence | 0-0.3s-CO-180s-CO | ||
| 11 | Rated short-circuit duration | S | 4 | |
| 12 | Times of breaking with the rated short-circuit current | Times | 30 | |
| 13 Mechanical life | M2 level | |||
| Specifications | QTY (Pc) |
PACKAGE Wooden box |
N.W./G.W. (kgs) |
Meas. (CBM) |
| ZW43-12 12KV 630A vacuum circuit breaker |
1 | 1 PKG | 123kgs / 100 kgs | 1.00 com |
Product Features
1.Excellent Arc – Quenching Performance: It adopts vacuum arc – quenching and solid insulation, with the advantages of small volume, light weight, large breaking capacity and high insulation level. The vacuum arc – quenching chamber uses solid – sealing technology, which has a long service life and high reliability. The shielding cover is exposed and encapsulated in epoxy resin, featuring good weather resistance and being convenient for transportation.
2.Reliable Operating Mechanism: The high – reliability bistable permanent – magnet technology is applied to the operating mechanism, which has a simple structure. With few moving parts, it requires no maintenance, and the mechanical life can be as high as 30,000 times. In addition, it is equipped with a manual tripping device. When the control system fails, manual tripping can be used for emergency disconnection operation, which can reliably break the rated load current.
3.Good Insulation Performance: The three – phase posts and current transformers adopt imported outdoor epoxy resin solid insulation, which has the characteristics of high and low – temperature resistance, ultraviolet resistance and aging resistance. The epoxy resin encapsulation meets the environmental protection requirements, and has been widely verified outdoor performance, being resistant to ozone and ultraviolet rays, firm, light and not easy to break.
4.High – quality Shell Material: The switch shell is made of stainless steel or treated by plastic spraying, which has good corrosion resistance and weather resistance.
Compact Structure Design: It adopts a three – post structure, and the vacuum arc – quenching chamber is connected to the operating mechanism through an insulating pull rod, with stable and reliable performance. The whole is of a fully – enclosed structure, which has good sealing performance, helps to improve the moisture – proof and condensation – proof performance, and is especially suitable for use in cold or humid areas.
5.Convenient for Installation and Operation: It has the advantages of miniaturization, novel appearance, light weight and easy installation. It can be operated manually, electrically or remotely. It can be equipped with a position detector. The proximity switch is installed on the linkage shaft, which can simply and reliably detect the on – off position of the switch without mechanical components.
Packaging：
Normal package，Standard wooden box，Or based on your demands.
COMPANY INTRODUCTION:
Jecsany Electrical Equipment Co., Ltd. was established in 2009, and it is backed by China Electric Porcelain Import and Export Co Ltd. Since 1981, the company has focused on the research and development, manufacturing and export of professional high-voltage power products, and has accumulated profound technical background and rich industry experience in this field, and has built a reputation for delivering high-quality products and exceptional service to our clients.
Moreover, the company gives full play to its own R&D and production experience advantages, and strives to cultivate a professional team that can match products with the fastest speed and highest accuracy. At present, the company has professional teams engaged in the power industry in South Africa, USA, South America, Vietnam and other places.
After years of development, the company has gradually become a professional supplier of diversified products including Power Transformers, Auto-Reclosers, Vacuum circuit breakers, Lightning arresters, Line protection devices, Switchgears, Fuse cutouts, Polymer / Glass / Porcelain insulators, Power line fittings and Tools, etc. Jecsany can provide customers with one-stop full-service from product development, design, manufacturing to transportation, installation and after-sales service.
Jecsany Team is the backbone of our success, and we are dedicated to fostering a work environment that encourages innovation, collaboration, and continuous improvement. We are constantly investing in our facilities and technology to ensure that we stay at the forefront of the industry, delivering high-quality products and services that exceed expectations.
