Vs1/R-12 Indoor vacuum circuit breaker with Lateral Operating Mechanism – Engineered for Safety and Efficiency

Meet the Vs1/R-12 indoor vacuum circuit breaker, a high-performance medium-voltage switching solution designed specifically for 12kV power distribution systems in compact indoor Switchgear Installations. With its innovative lateral operating mechanism, this breaker offers smoother operation, reduced mechanical stress, and easier integration into narrow-profile cabinets—making it an ideal choice for space-constrained environments such as urban substations, commercial buildings, and industrial control centers.

Built on proven vacuum interrupter technology, the Vs1/R-12 indoor vacuum circuit breaker ensures reliable interruption of load and fault currents up to 31.5kA, with a rated current range of 630A to 4000A. Its sealed-for-life design minimizes maintenance needs while delivering consistent performance over tens of thousands of operations. The lateral drive mechanism not only enhances mechanical efficiency but also improves accessibility during installation and servicing—reducing downtime and labor costs.

This breaker complies with international standards including IEC 62271-100 and is compatible with standard KYN28-type switchgear and other 12kV metal-clad configurations. Safety features include mechanical interlocks, clear open/close indicators, and optional electrical signaling modules for remote monitoring. The robust enclosure—visible in the image above—features a durable powder-coated finish that resists corrosion and wear in demanding indoor environments.

Whether you're modernizing existing infrastructure or deploying new smart grid-ready systems, the Vs1/R-12 with lateral operating mechanism delivers a perfect balance of compactness, reliability, and serviceability. Trusted by engineers worldwide, it’s a future-proof investment for efficient, safe, and sustainable medium-voltage power management.