ZN28-12 series indoor high voltage vacuum circuit breaker is HY equipment of rated voltage 12KV, three-phase, AC 50Hz. The breaker complies with GB1984-89 standard. Its structure can be divided in two kinds: breaker body integrated with operating mechanism or separate type. Namely integral type is basic one of ZN28-12, separate type is ZN28A-12, suitably assembled in different switchgears, such as GG-1A(Z), XGN2A 1O(Z) and etc. it can be operated by CD17, CD10A type DC electromagnetic mechanism, or CT 17, CT19 spring charging mechanism.
Main technical parameters
Outline and mounting dimensions