The ZN28-12 series vacuum breaker is HV indoor switchgear with rated voltage 12KV,three-phase AC 50HZ.The product conforms to GB1984-89 standard.There are two types of architectural structure:integrative design for operating mechanism and breaker body or segregative design.Integrative design is just ZN28-12 basic model.and segregative design is just ZN28A-12 model,suitable for fixed weitch cabinets,such as GG-1A(z),XGN2A10(Z)and so on.
The product can match with CD17,CD10A DC electromagnet operating mechanism and CT17,CT19 spring energy storage operating mechanism.
Rated short circuit breaking current
Rated short circuit switching current
Rated peak value withstand current
Rated short time withstand current
Rated insulation level
Power frequency withstand voltage(Rated open section front and back)
Impulse withstand voltage (Rated open section front and back)
Rated operating sequence
Breaking current frequency under rated short circuit
Operating mechanism rated switch-on voltage(DC)
Operating mechanism rated switch-on current(DC)
Operating mechanism rated off voltage(DC)
Operating mechanism rated off current(DC)
External & Build in Dimension