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Home/Load Break Switch/12kV Indoor Load Break Switch/FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse
FN7-12DR type indoor AC off-voltage load break switch is applicable to AC 50Hz, rated voltage 12KV in the three-phase AC power system as a load current breaking and closing short-circuit current use, the combination of electrical appliances can open any current up to short-circuit current, can be used as protection.
Features of FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse
1. Adopting high quality brand new raw materials, full oblique seams, refusing refurbishment
2. The load switch equipped with grounding switch can withstand short-circuit current
3. The stainless steel shell is thickened
Model Type of FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse
| 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
Technical parameters of FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse
| Rated voltage (KV) | 11 |
| Max voltage (kV) | 12 |
| Rated current (A) | 400/630 |
| 1min P.F withstand voltage (kV) | 42/48 42/48 |
| 4s thermal stable current (virtual)(kA) | 12.5/20 |
| Dynamic stable current (peak)(kA) | 31.5/50 |
| Short circuit making current (kA) | 31.5/50 |
| Rated breaking current (A) | 400/630 |
| Rated transfer current (A) | 1000/1000 |
Dimensions of FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse
Diagram 1 “Wire” load break switch without release
Diagram 2 “transformer protection” load break switch without release
Diagram 3 Release impact load break switch
Diagram 4 CS6 Operating mechanism mounting drawing
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