Ultra-Fast Opening • Long Lifespan • Easy Replacement • High Precision | 12kV Fast Vacuum Circuit Breaker
To help power systems achieve more energy-efficient, stable, and secure operations, Greegoo proudly launches the GRH-12F series 12kV Indoor Fast Vacuum Circuit Breaker. Leveraging core technical advantages, it provides an ultimate protection solution for terminal loads.
Ultra-Fast Opening for Millisecond Precision
Equipped with an advanced eddy current driving mechanism, the product achieves an opening time of less than 5ms. This industry-leading response speed quickly cuts off fault currents, maximizing the safety of terminal loads like transformers and motors while minimizing fault-related losses.
Longer Lifespan, Lower Wear
The innovative direct-rod drive structure significantly reduces mechanical wear. With a mechanical life of up to 30,000 cycles—far exceeding conventional circuit breakers—it ensures stable, reliable operation while reducing maintenance frequency and costs.
Seamless Replacement, Zero-Hassle Retrofitting
Designed to be fully interchangeable with standard medium-voltage circuit breakers, this product requires no changes to cabinet structures or additional modifications. Installation is simple and compatible with existing distribution systems, making upgrades efficient and cost-effective.
Precise and Stable Performance
The three-phase opening and closing asynchrony is kept within ≤2ms. High synchronization precision ensures smooth, deviation-free operation, comprehensively enhancing the safety of power distribution systems across various demanding environments.
Greegoo remains committed to technological innovation, providing high-quality equipment and efficient services for power systems. We sincerely invite partners from all sectors to join us in building a safe, reliable, and win-win future for the modern power grid.

Cheers to a Fantastic Year of our Partnership
Season's greatings & Happy New Year
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