GeneralZW32-12 Series outdoor AC vacuum circuit breaker is 12kV
distribution equipment of 3 phase,50Hz. It's used to
connect and break load current,over-load current, and
short-circuit current. It's applicable for substations, industry,
mining, and urban and rural electric power networks,
especially applicable on occasions with frequent operation and
automatic power distributionnetworks. Model and
Definition Technical specificationNo.ItemUnitData1Rated
frequencyHz502Rated voltagekV123Rated currentA630/12504Rated
short-time power frequency withstand voltageInterphase, to
earth(wet)kV/min42/1Interphase, to
earth(dry)48/1Break(dry)34/1Secondary circuit to earth2/15Rated
lightning impulse withstand voltageInterphase, to
earthkV75Break856Rated short-circuit breaking currentkA20/257Rated
short-circuit making current(peak) 50/638Rated short-time
withstand current and durationkA/s(20/25)/49Rated peak withstand
currentkA50/6310Rated short-circuit breaking current breaking
timesTimes3011Rated operating voltage and rated voltage of
auxiliary circuitVAC/DC220,DC48,DC2412Main circuit
resistanceWithout isolationμΩ≤80With
isolation ≤12013Mechanical lifeTimes10000Note: If the altitude
is over 1000m, the rated insulation level should be modified as
appropriate. Outline and Dimensions/* January 22, 2024
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