GLSV‑ZNH1‑12 Smart High-Speed Circuit Breaker is a high‑performance indoor vacuum circuit breaker designed specifically for 12 kV nonlinear load applications. It supports precise phase‑selection control and provides phase‑controlled switching, non‑full‑phase operation, and anti‑pumping protection, effectively suppressing inrush currents and transient impacts.

It adopts a three‑phase independent permanent‑magnet operating mechanism, achieving ±0.5 ms high‑precision closing and opening control. With a compact structure and mechanical endurance exceeding 30,000 operations, it ensures long‑term reliability.

The breaker is equipped with intelligent features such as event recording, operation waveform capture, and coil monitoring. An integrated energy‑storage module enables low‑power operation, and manual mechanical tripping is supported. It is ideal for medium‑voltage systems requiring highly reliable control of critical loads.