ZN28-12 series vacuum circuit breaker is HV indoor circuit breaker with rated 12Kv, Tri-phase AC50Hz.

The product conforms to GB1984-89standard, the whole of which is 2catgory with installation of switch body disconnecting with operating mechanism and installation of switch body combined with operating mechanism. Integration body structure, namely, basic type N28-12;Disconnecting body structure is type N28A-12, and it is applicable to fixing switchboard with a wide range of type, such as GG-1A (Z), XGN2A10 (Z) etc.

The product can match with CD17CD10A type DC electro-operating mechanism and CT17,CT19type spring energy storing type operating mechanism.Main technical specifications:Rated voltage   12KVRated current   630KA      1000KA      1250KA    1600KA    2000KA    2500KA   3150KARated short circuit breaking current   20KA     25KA     31.5KA     40KARated short circuit switch-off on current (peak value)    50KA     63KA      80KA     100KARated peak withstand current      50KA     63KA     80KA     100KA4Srated short time withstand current    20kA     25KA     31.5KA      40KA