Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
FKN12-12D Air Load Break Switch: 12kV 630A motor operated compressed air LBS, 50kA making, 1250kVA transformer, spring mechanism, terminal/box-type substations, -25°C to +40°C.
Advanced FKN12 Compressed Air Load Break Switch Series: Premium FKN12-12D compressed air load break switch and FKRN12-12D fuse combination designed for 3-phase AC 50Hz 12kV indoor power distribution systems, serving to control and protect power equipment including transformers, cables and overhead lines, particularly suitable for terminal transformer substations and box-type substations in grid applications, featuring spring operating mechanism with manual and electrical motor operation, delivering 630A rated current with 50kA rated short-circuit making current (peak), 20kA (4s) rated short-time withstand current (thermal stability), 630A active load and loop breaking, 10A cable charging and 1250kVA no-load transformer breaking capacity.
Terminal and Box-Type Substation Ready: FKN12-12D incorporates flexible installation options—front-mounted, side-mounted, flip-mounted—with right/left operation configurations, FKRN12-12D providing 31.5kA rated short-circuit breaking current with limit current fuse and 1200A rated transfer current, featuring 42kV power frequency withstand (ground/phase), 75kV lightning impulse, 2000 mechanical life cycles, suitable for -25°C to +40°C environments at altitudes ≤1000m, providing reliable compressed air load break switching solution for 12kV terminal and box-type substations requiring motor operation.
| A | H | C | D | E | F | K | J | L | M | N | P | R | S | T | U | V | W | Z |
| 376 | 940 | 600 | 210 | 648 | 270 | 67 | 50 | 155 | 287 | 171 | 368 | 11 | 337 | 170 | 94 | 105 | 868 | 180 |
| FKN12-12D Air Load Break Switch Specifications | FKN12-12D | FKRN12-12D | Unit |
|---|---|---|---|
| Model Number | FKN12-12D/630-20 | FKRN12-12D/125-31.5 | – |
| Brand | Bepto Insulation Systems | Bepto Insulation Systems | – |
| Product Type | Compressed Air Load Break Switch | Compressed Air Load Break Switch-Fuse Combination | – |
| Operating Mechanism | Spring Operating Mechanism (Manual + Motor) | Spring Operating Mechanism (Manual + Motor) | – |
| Installation Type | Front-Mounted, Side-Mounted, Flip-Mounted | Front-Mounted, Side-Mounted, Flip-Mounted | – |
| Rated Voltage | 12 | 12 | kV |
| Rated Frequency | 50 | 50 | Hz |
| Rated Current | 630 | 125 | A |
| 1min Power Frequency Withstand (Ground/Phase) | 42 | 42 | kV |
| Power Frequency Withstand (Isolating Fracture) | 48 | 48 | kV |
| Lightning Impulse Withstand (Ground/Phase) | 75 | 75 | kV |
| Lightning Impulse Withstand (Isolating Fracture) | 85 | 85 | kV |
| Rated Short-Time Withstand Current (Load Switch) | 20 | – | kA |
| Rated Short-Time Withstand Current (Earth Switch) | 20 | – | kA |
| Rated Short-Circuit Duration (Load Switch) | 4 | – | s |
| Rated Short-Circuit Duration (Earth Switch) | 2 | – | s |
| Rated Short-Circuit Making Current (Peak) | 50 | – | kA |
| Active Load Breaking Current | 630 | – | A |
| Loop Breaking Current | 630 | – | A |
| 5% Active Load Breaking Current | 31.5 | – | A |
| Cable Charging Current | 10 | – | A |
| No-Load Transformer Capacity | 1250 | – | kVA |
| Rated Short-Circuit Breaking Current (Limit Fuse) | – | 31.5 | kA |
| Rated Transfer Current | – | 1200 | A |
| Mechanical Life | 2000 | 2000 | cycles |
| Striker Output Energy | – | 1±0.5 | J |
| Ambient Temperature | -25 to +40 | -25 to +40 | °C |
| Altitude | ≤1000 | ≤1000 | m |
| Relative Humidity (Daily/Monthly Average) | ≤95% / ≤90% | ≤95% / ≤90% | – |
| Application | Terminal Transformer Substations, Box-Type Substations, 12kV Indoor Switchgear | Terminal Transformer Substations, Box-Type Substations, 12kV Indoor Switchgear | – |
Bepto is a leading Chinese company in electrical insulation, focused on developing advanced solutions for future power systems. We support transmission and distribution safety and growth, with long-term partners including State Grid, ABB, Schneider, Siemens, and GE. Our services reach clients in over 22 countries.
Bepto focuses on the global market and provides our clients with products suitable for the local market:
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
