The ZN28-12 series high-voltage vacuum circuit breaker is designed for rated voltage of 12kV, three-phase AC 50Hz high-voltage indoor switchgear. This product complies with the GB1984-89 standard and is available in two configurations: integrated installation of the switch body and operating mechanism, and separate installation of the switch body and operating mechanism. The integrated structure corresponds to the ZN28-12 basic model, while the split structure is the ZN28A-12 model, suitable for various fixed switchgear cabinets such as GG1A(Z) and XGN2A10(Z).

This product can be equipped with the CD17 type DC electromagnetic operating mechanism and the CT19A type spring energy storage operating mechanism.