Home » Switching Devices »Load Break Switch » FN7-12 Series 12kV Indoor High Voltage Load Break Switch and Fuse Combination Appliances
  • LBS FN7-12C 1
  • LBS FN7-12C 2
  • LBS FN7-12C 4
  • LBS FN7-12CD 3
  • LBS FN7-12CDXLRAF 1
  • LBS FN7-12CDXLRAF 5
LBS FN7-12C 1
LBS FN7-12C 2
LBS FN7-12C 4
LBS FN7-12CD 3
LBS FN7-12CDXLRAF 1
LBS FN7-12CDXLRAF 5

FN7-12 Series 12kV Indoor High Voltage Load Break Switch and Fuse Combination Appliances

Model: FN7-12
  • General
  • Model Type
  • Technical parameter
  • Use of environmental conditions
  • Drawing

FN7-12 AC high-voltage load switch is a new type of gas-producing indoor high-voltage load switch. It is suitable for three-phase AC power systems with AC 50Hz and rated voltage of 12kV. It is used for breaking load current and closing short-circuit current.

FN7(C)-12 series high-voltage load switch and fuse combination are based on FN7-12 series high-voltage load switch, adding side operating mechanism, which makes the installation more simple and convenient, and can meet the different requirements of users

Type Model DS DX L R RA F
Earthing switch at input terminal Earthing switch at output terminal Interlock device Fuse Impact release Power closing device
No release FN7-12
FN7-12DSL
FN7-12DXL
FN7-12R
FN7-12DSLR
FN7-12DXLR
With impact release FN7-12RAF
FN7-12DSLRAF
FN7-12DXLRAF

Note: (-)without (△)with

Item Unit Data
Rated Voltage KV 12
Maximum voltage KV 12
Rated current A 400 630
1min frequency withstand voltage. KV 42/48
4S thermally stable rated current (RMS) KA 12.5 50
Dynamic stabilization current(peak) KA 31.5 50
Short circuit closing current KA 31.5 50
Rated opening current A 400 630
Rated transfer current A 1000

1. The upper limit of surrounding air temperature: +40℃, the lower limit: -25℃.
2. Altitude not exceeding 1000m.
3. Relative humidity: daily average not more than 95%, monthly average not more than 90%.
4. Earthquake intensity not exceeding 8 degrees.
5. No fire, explosion hazard, chemical corrosion and violent vibration in the place.
6. Filtration level: Class II.
7. The surrounding air should be free from obvious pollution such as corrosive or combustible gases and water vapour.

FN7-12 LBS drawing

 

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