FKN(R)12A-12 Indoor Vacuum Load Switch

KN12A- 12D pneumatic load switch and FKRN12A- 12D series air compressor load switch fuse are combination apparatus; Suitable for the control and protection of power equipment such as transformers and overheadlines in three-phase distribution systems with a rated voltage of 12kV and below; Especially suitable for terminal substations and box substations in urban and rural power grids, suitable for control and protection of ring networks and dual radiation power supply unitsThe FKN12A- 12D series pneumatic load switch can be used for breaking and making load current and overload current.
FKRNI2A- 12D series air compressor load switch fuse combination apparatus can break and close load current,overload current and short-circuit current of the line.
Standard: IEC 60265-1,IEC 265,IEC 420.

Operating conditions

1. Ambient air temperature: upper limit + 40℃ , The lower limit is – 25℃ ;
2. The altitude is not more than 1000m;
3. Relative air temperature: the target average value s hall not be greater than 95%.and the monthly average value s hall not be greater than 90%,
4. The seismic intensity should not exceed 8 degrees;e.
5.No fire, explosion, chemical corrosion and severe vibration places;
6. Pollution level: II