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Home/Load Break Switch/12kV Indoor Load Break Switch/FN7-12C 12kV High Voltage AC Manual Type Load Break Switch With Panel Operation FN7-12C 12kV High Voltage AC Manual Type Load Break Switch With Panel Operation
FN7-12 AC high-voltage load break switch is a new type of gas-generating indoor high-voltage load switch. It is suitable for three-phase AC power systems with AC 50Hz and rated voltage 12kV. It is used to break load current and close short-circuit current.
The FN7(C)-12 series of high-voltage load break switches and fuse combination appliances are based on the FN7-12 series of high-voltage load break switches and add a side operating mechanism, making the installation simpler and more convenient and able to meet the different requirements of users.
Electrical ProductsFN7-12C load switch normal usage environment
1. The upper limit of ambient air temperature: +40 degrees, the lower limit: -25 degrees;
2. The altitude does not exceed 1000m;
3. Relative humidity: the daily average value is not greater than 95%, and the monthly average value is not greater than 90%;
4. The earthquake intensity does not exceed 8 degrees;
5. Places without risk of fire, explosion, chemical corrosion and severe vibration;
6. Pollution level: Level II;
7. The surrounding air should not be significantly polluted by corrosive or flammable gases and water vapor.
FN7-12C 12kV high voltage load break switch technical parameters
| Item | Unit | Data | |
| Rated voltage | kV | 12 | |
| Rated current | A | 400 | 630 |
| 1min power frequency withstand voltage | kV | 42/48 | |
| 4S thermal stable rated current (effective value) | kA | 12.5 | 20 |
| Dynamic stable current (peak value) | kA | 31.5 | 50 |
| Short circuit making current | kA | 31.5 | 50 |
| Rated breaking current | A | 400 | 630 |
| Rated transfer current | A | 1000 | |
FN7-12C LBS Overall dimension drawing reference
FN7-12 Model Reference
| 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
FN7 Series Load Break Switch Ordering Instructions
1. Model, name and quantity of load break switch.
2. If equipped with a fuse, please specify the type, rated voltage and rated current of the fuse.
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