Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
FZRN21-12 Vacuum Load Break Switch: 12kV 630A indoor vacuum LBS, 50kA dynamic, 10000 mechanical cycles, 1250kVA transformer, maintenance-free, IEC compliant, -25°C to +40°C.
Advanced FZRN21 Vacuum Load Break Switch Series: Premium FZN21-12/T630-20 and FZRN21-12D/T125-31.5 indoor AC high voltage vacuum load break switch-fuse combination units designed for three-phase AC 12kV 50Hz power systems, widely used in urban network construction, industrial enterprises, high-rise buildings and public facilities as ring power supply units or terminal equipment for power distribution, control and protection, featuring breaking capacity with safety, reliability and long life, delivering 630A/1250A rated current with 50kA rated dynamic current (peak), 20kA (4s) thermal current, 630A/1250A power load and closed-loop breaking, 10A cable charging, 1250kVA no-load transformer breaking, FZRN21-12D providing 3150A AC breaking and 50kA short-circuit closing.
Ring Network and Maintenance-Free Ready: FZRN21-12 incorporates vacuum technology for frequent operation capability with compact structure, small size, light weight, basically maintenance-free, featuring 10000 mechanical life cycles, 2000 rated current breaking times, visible fracture isolation with ground switch and spring mechanism for remote control, 42kV power frequency withstand, 75kV lightning impulse, compliant with IEC60265-1, IEC60420, GB16926, GB3804 standards, suitable for -25°C to +40°C environments at altitudes ≤1000m.
| FZRN21-12 Vacuum Load Break Switch Specifications | 630A Model | 1250A Model | Unit |
|---|---|---|---|
| Model Number | FZN21-12/T630-20 | FZN21-12/T1250-20 | – |
| Alternative Model | FZRN21-12D/T125-31.5 | – | – |
| Brand | Bepto Insulation Systems | Bepto Insulation Systems | – |
| Product Type | Indoor AC High Voltage Vacuum Load Break Switch-Fuse Combination Units | Indoor AC High Voltage Vacuum Load Break Switch-Fuse Combination Units | – |
| Technology | Vacuum Technology (Maintenance-Free) | Vacuum Technology (Maintenance-Free) | – |
| Rated Voltage | 12 | 12 | kV |
| Rated Frequency | 50 | 50 | Hz |
| Rated Current | 630 | 1250 | A |
| Rated Insulation Level – Power Frequency (Arc Chamber) | 48 | 48 | kV |
| Rated Insulation Level – Power Frequency (Ground/Phase) | 42 | 42 | kV |
| Rated Insulation Level – Power Frequency (Isolating) | 48 | 48 | kV |
| Lightning Impulse Withstand (Ground/Phase) | 75 | 75 | kV |
| Lightning Impulse Withstand (Isolating) | 85 | 85 | kV |
| Rated Dynamic Current (Peak) | 50 | 50 | kA |
| 4s Thermal Current | 20 | 20 | kA |
| Rated Power Load Breaking Current | 630 | 1250 | A |
| Rated Closed-Loop Breaking Current | 630 | 1250 | A |
| Rated Cable Charge Breaking Current | 10 | 10 | A |
| Rated Breaking No-Load Transformer Capacity | 1250 | – | kVA |
| Rated Breaking AC Current (FZRN21-12D) | 3150 | – | A |
| Rated Short-Circuit Closed Current | 50 | – | kA |
| Rated Current Breaking Times | 2000 | 2000 | times |
| Mechanical Life | 10000 | 10000 | cycles |
| Permitted Wear-Thickness of Vacuum Contact | 2 | 2 | mm |
| Manual Operating Torque | >200 | >200 | N·m |
| Ambient Temperature | -25 to +40 | -25 to +40 | °C |
| Altitude | ≤1000 | ≤1000 | m |
| Relative Humidity (Daily Average) | ≤95% | ≤95% | – |
| Contamination Level | II | II | – |
| Standards Compliance | IEC60265-1, IEC60420, GB16926, GB3804 | IEC60265-1, IEC60420, GB16926, GB3804 | – |
| Application | Ring Network Units, Terminal Equipment, Urban Networks, Industrial Enterprises, High-Rise Buildings | Ring Network Units, Terminal Equipment, Urban Networks, Industrial Enterprises, High-Rise Buildings | – |
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.
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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.
