FN12-12D/630- 20 indoor AC high voltage Load SwitchlHereinafter called FN12- 12D load switch) is is suitable for three- -phase AC distribution system with rated voltage of 12 KV and rated frequency of 50Hz. It is used for opening and closing load current, closed loop current, no- -load transformer and cable charging current, closing short circuit current. The load switch equipped with the Earthing Switch can withstand the short circuit current. FN12-12(R)D/125-31.5 indoor AC high voltage load switch-- -fuse combination (hereinafter called FN12-12(R)D combination) is an indoor high voltage switch device which combines FN12-12D load switch and SOLAJ-12(XRNTC J-10)high voltage current limiting fuse. It can break reliably under any current except it is up to short-circuit current. The load switch breaks the working current and the fuse breaks the short circuit current. And the combination breaks any overcurrent between the working current and the full short circuit current, and the fuse breaks the load switch through its impactor

Working Condition

O Ambient air temperature:Max. +40°C;Min.- 25 ClAllowed to storage and transportation at - -30°C) the average value is not higher than 35°C with in 24 hours. O Air relative humidity:Daily average is not greater than 95%, monthly average is not greater than 90% O Earthquake intensity: no more than 8 degrees O Altitude:not more than 1000m O No frequent and severe vibration O Pollution level:I O The surrounding air is not contaminated by corrosive and flammable gases, water vapor, etc.  

Drawing

Environmental