Vacuum Circuit Breaker
Kampa supplies medium voltage vacuum circuit breakers from 12 kV to 40.5 kV, indoor and pole mounted outdoor, for switchgear builders, EPC contractors and distribution utilities. Every frame on this page is built to order: current rating, breaking capacity, mechanism, CT arrangement and mounting type are fixed at quotation rather than picked from a stock list.
Start from the voltage class, not the model. A 12 kV frame covers 11 kV and 6.6 kV systems, a 24 kV frame covers 15 kV, 20 kV and 22 kV networks, and a 40.5 kV frame covers 25 kV, 33 kV, 35 kV and 36 kV systems. Indoor frames (VS1 ZN63A, VBI, VSG) go into metal-clad switchgear; pole mounted outdoor frames (ZW32, ZW7, ZW8) go onto overhead line structures.
For selection guidance, published ratings and the full range overview, see the vacuum circuit breaker manufacturer page.
Why Choose Kampa
Kampa offers high-performance medium and high-voltage power distribution solutions that combine reliability, efficiency, and competitive pricing. Our products are designed to optimize performance while reducing total cost of ownership, helping your business achieve more for less.
- Competitive Pricing
- High Efficiency
- Reliable Performance
- Tailored Solutions
Industrial Power Distribution Protection Product Catalog
Kampa medium-voltage and high-voltage power transmission and distribution solutions combine advanced technology with reliable performance to meet the power needs of various industries and cities.
- Master all models and series
- Voltage rating, capacity, size, and other data
- Guide product selection in different environments
- Comparison of product performance
Products Advantage
High Insulation Class
Engineered with high-grade insulation systems and robust structural design, our products ensure stable performance under high voltage and demanding conditions.
Harsh Environments
Our equipment is designed for extreme environments such as high temperature, high humidity, and dust, ensuring stable and reliable performance.
Low Maintenance Costs
Our products utilize durable components and optimized design, resulting in a longer service life and less wear.
Customization Available
We can provide customized solutions based on voltage level, capacity, and application scenario.
Get in Touch with Our Sales & Technical Team
- +86 0577-62729846
- 13362788157
- 8613757786841
- sales@elexpert.cn
- Address: No. 20, Yaming Road, Xiangyang Industrial Zone, Liushi Town, Yueqing City, Zhejiang Province
What is a Vacuum Circuit Breaker?
A Vacuum Circuit Breaker is a switching device that uses a vacuum interrupter to extinguish arcs during current interruption in medium-voltage power systems.
How does a Vacuum Circuit Breaker interrupt fault current?
Vacuum Circuit Breaker operation separates contacts inside a vacuum chamber, where the absence of ionized gas enables rapid arc extinction and current interruption.
Which applications use a Vacuum Circuit Breaker?
Vacuum Circuit Breaker units are used in substations, industrial plants, and distribution networks operating up to 40.5 kV.
How is the rated short-circuit capacity selected?
Rated short-circuit capacity is chosen based on system fault level calculations, matching the 21 kA or 31.5 kA breaking ratings to network requirements.
What control power is required for a Vacuum Circuit Breaker?
Vacuum Circuit Breaker mechanisms operate with AC/DC 220 V control voltage, compatible with standard protection and control systems.