Overview ZN12-12 (zn68-12) series indoor high-voltage vacuum circuit breaker is an indoor high-voltage switchgear with rated voltage of 12kV, three intersecting 50Hz. It is a product manufactured with the technology of German Siemens. The operating mechanism of the circuit breaker is spring energy storage type. It can be operated by AC or DC or manually. It is suitable for the control or protection of power plants, substations and other transmission and distribution systems, especially for places where important loads are disconnected and frequent operations are carried out. Zn12-40.5 indoor high voltage vacuum circuit breaker can be the main switch matched with kyn-40.5, gbc-40.5 and other series switchgear. The circuit breaker is installed on the handcart in the switch cabinet as a movable unit. At the same time, the circuit breaker can also be installed in xgz-40.5 switch for fixed installation. The circuit breaker mechanism is integrated with the switch: a special spring energy storage operating mechanism, which can be operated by AC and DC energy storage or manually.
