The VD4 Medium Voltage vacuum circuit breaker is a premium indoor vacuum circuit breaker engineered for dependable performance in 10kV to 24kV power distribution systems. Widely recognized for its reliability, compact design, and advanced arc-quenching capabilities, the VD4 breaker is ideal for use in industrial facilities, commercial buildings, utility substations, and renewable energy installations.

Featuring a sealed-for-life vacuum interrupter and a spring-operated mechanism, the VD4 ensures maintenance-free operation over thousands of switching cycles. Its modular construction allows easy integration into metal-clad switchgear panels, supporting both fixed and withdrawable configurations. The breaker complies with international standards including IEC 62271-100 and ANSI C37.04, guaranteeing safety, durability, and interoperability.

The sleek, professional enclosure—shown in the image above—boasts a corrosion-resistant powder-coated finish and clearly labeled operational indicators for enhanced user safety and serviceability. Integrated mechanical and electrical interlocks prevent unSafe Operations, while optional smart monitoring modules enable predictive maintenance and remote diagnostics in modern digital substations.

With rated currents up to 4000A and short-circuit breaking capacities up to 50kA, the VD4 delivers exceptional protection against overloads and fault conditions. Its low environmental impact, minimal operating noise, and compact footprint make it a sustainable choice for indoor switchgear applications where space and efficiency are critical.

Trusted globally by engineers and facility managers, the VD4 Medium Voltage Vacuum Circuit Breaker combines proven technology with future-ready flexibility—ensuring uninterrupted power delivery and long-term cost savings across diverse electrical infrastructure projects.