ZN28-12 type indoor high voltage vacuum circuit breaker is high indoor switch equipment of three-phase AC 50Hz, rated voltage 12kV. The product conforms to the GB1984-89 standard, the product structure has two forms: the switch body and the actuator is mounted together or switch body and actuator installed separately. Integrated structure is ZN28-12 basic model; split structure is ZN28A-12 type, suitable for various kinds of fixed type switch cabinet, such as GG-1A (Z), XGNZ-10 (Z) etc..It can be equipped with CD17 type DC electromagnetic actuator and CT17, CT19 spring type operating mechanism.
1.The environment temperature: upper limit +40℃, lower limit -15℃
3.Relative humidity: daily average value is not greater than 95%, monthly average is not greater than 90%
4.Earthquake intensity: less than 8 degrees
5.No fire, explosion, pollution, chemical corrosion and severe vibration place
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