40.5kV Indoor Circuit Breaker

The LTK-40.5 indoor high-voltage AC SF6 circuit breaker is designed for smooth and reliable breaking performance, with a maximum rating of 2500A-31.5kA and a mechanical lifespan of 10,000 operations. It supports back-to-back capacitor bank switching up to 1500A, setting a leading benchmark in the domestic market.

This circuit breaker has been widely deployed in State Grid projects, securing a dominant market position and breaking the monopoly previously held by joint ventures such as ABB and Schneider.

In addition to seamlessly switching capacitive loads—such as capacitor banks—without current chopping overvoltage or restrike, it is also well-suited for switching reactors, small inductive loads, and other inductive applications.