Fenarro’s substation project (2021) in Battambang, Cambodia has been running smoothly and received positive feedback from local users

High voltage disconnect switches are essential for ensuring safe electrical isolation in power systems. Designed for both indoor and outdoor applications, they provide visible open points, enable safe maintenance, and support small current operations. Fenarro’s series covers multiple voltage levels and installation environments, helping engineers and procurement teams select the right switch for substations, industrial facilities, and renewable energy projects.

This blog compares HV vacuum circuit breakers (VCBs) and low-voltage air circuit breakers (ACBs). It emphasizes that VCBs are suitable for 3.3–330 kV systems, offering high reliability, minimal maintenance, and safe arc extinction, while ACBs are only appropriate for low-voltage applications. Real project cases illustrate the operational risks of misapplication.

This article explains how to verify a Chinese VCB supplier remotely. It highlights the importance of checking type test reports, routine testing capability, vacuum interrupter traceability, and factory transparency. Engineers can assess reliability without on-site visits, ensuring the selected manufacturer meets IEC standards and project-specific requirements.