EnglishEnglishViews: 0 Author: Site Editor Publish Time: 2026-03-11 Origin: Site
Choosing the right vacuum circuit breaker (VCB) brand is critical for power system safety and longevity. Breaking capacity and reliability are the two most important factors. In 2026, with increasing demands from renewable energy and smart grids, selecting a trustworthy manufacturer is more important than ever. Fenarro Power Technology shares key evaluation criteria and why our VCBs stand out in global projects.
When vetting VCB brands, focus on these core aspects to ensure long-term value and safety.
Check rated breaking current (kA): 25kA–40kA is standard for 33kV–40.5kV systems.
Verify type test reports (IEC 62271-100): Ensure independent lab certification.
Fenarro Advantage: Up to 40kA breaking capacity, fully type-tested.
Mechanical life: ≥30,000 operations (M2 class preferred).
Electrical life: High number of full short-circuit interruptions (e.g., 50–100 times at rated capacity).
Fenarro Advantage: 30,000+ mechanical operations, proven in export projects.
Contact material (CuCr alloy) and design for low chopping current.
Shielding and vacuum degree maintenance over 20–30 years.
Fenarro Advantage: High-quality vacuum interrupters with extended service intervals.
SF6-free design (zero GWP).
IP protection level for outdoor use (IP65+).
Fenarro Advantage: Fully eco-friendly, weather-resistant outdoor models.
Certifications: IEC, GB, ISO, third-party type tests.
Export experience and customer references.
Fenarro Advantage: 15+ years, 90% export to Middle East, Southeast Asia, Africa, Europe.
Our indoor (VS1/ZN63) and outdoor (ZW32) series are designed for maximum reliability and minimal maintenance, backed by rigorous testing and global project success.
Need help vetting VCB options? Contact Fenarro for technical consultation and quotes.
Ethan
With over 16 years of experience in high-voltage electrical equipment, Ethan‘s current focus is on HV switchgear and system solutions for industrial and renewable energy sectors.He specializes in HV SF6 and vacuum circuit breakers for outdoor applications, indoor HV vacuum circuit breakers, disconnect switches, air-insulated switchgear (AIS), fuses, surge arresters, transformer neutral equipment, and vacuum load break switches.As an industry columnist and technical consultant, he provides reliable, practice-based insights to help engineers improve system reliability and operational safety.
