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The VD4 series represents a high-performance line of medium voltage vacuum circuit breakers designed for indoor applications in power distribution systems. These breakers utilize advanced vacuum interrupter technology to ensure reliable operation under both normal and fault conditions.
With a rated voltage range spanning from 12kV to 40.5kV and current ratings from 630A up to 4000A (with forced cooling), the VD4 breakers are suitable for diverse industrial applications. The symmetrical short-circuit breaking capacity reaches up to 63kA, making them ideal for demanding electrical environments.
Key features include a separate pole construction technique, long service life expectancy, and the ability to handle frequent switching operations without vacuum degradation. The compact design combines small dimensions with high capacity, while the operating mechanism requires minimal maintenance.
Applications include:
- Cable and overhead line protection
- Transformer and distribution substations
- Motor and generator control
- Capacitor bank protection
- Industrial power distribution systems
The VD4 vacuum circuit breakers are available in both fixed and withdrawable versions, with options for embedded or assembled pole configurations. The operating mechanism includes features such as open/closed auxiliary contacts, spring charging motor, mechanical operation counter, and various signalling devices.
Commendable experience overall! The delivery was impressively fast, arriving well ahead of the estimated schedule, which minimized any project delays. Communication from the seller was consistently clear and responsive, making the entire process smooth and hassle-free. The packaging was secure and professional, ensuring the item arrived in perfect condition without any damage. Highly satisfied with the efficient logistics and excellent support provided.
Zippy delivery exceeded expectations with the circuit breaker arriving two days ahead of schedule. Zero issues with packaging as every component was meticulously secured in industrial-grade materials. Zealous customer service provided real-time shipping updates and promptly addressed my installation timeline concerns. Zonal logistics coordination was flawless, with the carrier following specific delivery instructions precisely. Zenith quality inspection was evident upon unboxing, with pristine components and clear documentation. Zestful communication from the sales team made the procurement process remarkably smooth. Zirconium-level protective measures ensured zero transit damage to the delicate vacuum interrupter assembly. Zoom-like efficiency characterized the entire supply chain experience from order placement to final delivery.
