Magnetic Protection Circuit Breaker

When you need to handle thousands of amps of excitation current, a standard breaker is not enough. You need this magnetic protection circuit breaker. It is a heavyweight champion for large generator sets. It uses several patented technologies. The arc extinction system uses magnetic blow-out and grid plates. The electric field limiting technology uses high-energy PTC and ZnO components. This keeps the arc under control when breaking DC inductive loads. Test data shows that when breaking a 2500A forced excitation current, our arc system keeps the ZnO varistor residual voltage at about 1200V. The arc voltage at the contacts is 1700V. The protection effect is clear.

We have 42 years of experience. We also work with the Jiangnan Graphene Research Institute and the Shanghai Electrical Apparatus Research Institute. We bring advanced materials into our products. This is how we developed this magnetic protection circuit breaker. The environment for this product is often tough. So we do extra environmental tests. All units go through large temperature chambers, salt spray chambers, and dust chambers. This ensures the magnetic protection circuit breaker works well in heavy load, dusty, and wet places like power plants and mines.

This magnetic protection circuit breaker is used in large hydro and turbine generator excitation circuits. It serves national grids, large industrial plants, and rail transit. These are critical for public safety and national energy security. Choosing this magnetic protection circuit breaker means choosing the highest level of protection for your key assets. A common question we get is, "What is your patent for?" It is ZL200720043251.3. This covers our magnetic blow-out arc control technology. It gives you stable arc extinction regardless of current size. We offer an 18-month warranty. Our team is ready to support your most important projects.