Summary
        FKN12-12d/630-20 indoor AC high-voltage load switch (hereinafter referred to as FKN12-12d load switch) is a three-phase high-voltage switchgear with rated voltage of 12kV and rated frequency of 50Hz, which is used for opening and closing load current, closed-loop current, no-load transformer and cable charging current, and closing short-circuit current. Load switch equipped with grounding switch can bear short-circuit current.
         FKN12-12R.D/125-31.5 indoor AC high-voltage load switch fuse combination device (hereinafter referred to as FKN-12R.D combination device) is an indoor high-voltage switchgear which is composed of FKN12-12d load switch disconnection and S□LAJ-12(XRNT□-12) high-voltage current limiting fuse. It can reliably disconnect any current up to the short-circuit current: the load switch disconnects the working current, the fuse disconnects the short-circuit current, and jointly disconnects any over current between the working current and the full short-circuit current. At the same time, the fuse disconnects the load switch through its impactor.

Environmental conditions for use
Ambient air temperature: upper limit + 40 ℃, lower limit - 25 ℃;
Altitude: 1000m and below;
Relative humidity: monthly average value is not more than 90%,
The daily average value is not more than 95%;
The surrounding air shall be free from obvious pollution such as corrosion or combustible gas and water vapor;
No frequent vigorous exercise;
Pollution resistance level: Level II.
If the service conditions exceed the above provisions, the user and the manufacturer shall negotiate and determine.

Model and meaning



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Outline and installation dimension