The ZN12-12 series high-voltage vacuum circuit breaker is an indoor high-voltage switching device with a rated voltage of 12kV and a three-phase AC 50Hz. It is a product manufactured using technology introduced from Siemens AG of Germany. The operating mechanism of this circuit breaker is spring-energy storage type, which can be operated with AC or DC, and can also be manually operated.

This circuit breaker features a simple structure, strong breaking capacity, long service life, comprehensive operating functions, and easy maintenance. It is suitable for use as a control or protection switch in power transmission and distribution systems such as power plants and substations, and is particularly suitable for locations where important loads need to be broken and frequent operation is required.

This product complies with the GB1984-89 standard "AC High-Voltage Circuit Breakers".