Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
FZRN21-40.5 Vacuum Load Break Switch: 40.5kV 1250A indoor MV LBS, 31.5kA short-circuit breaking, fuse combination, visible isolation, ring network, remote control, -25°C to +40°C.
Advanced FZN21-40/FZRN21-40 Vacuum Load Break Switch Series: Premium FZN21-40/T630-20 and FZRN21-40(R)D/T125-31.5 indoor AC high voltage load switch-fuse combination units for three-phase AC 40.5kV 50Hz power systems, designed for ring network switchgear, combined substations, distribution equipment with 1250A rated active load breaking and closed-loop breaking current, featuring 31.5kA rated short-circuit breaking current (FZRN21-40D/T125-31.5), 80kA rated short-circuit making current, 50kA rated peak withstand current and 20kA (4s) short-time withstand current, incorporating visible isolation fracture preventing equipment missing operation, ground switches and spring mechanisms for remote control capability.
Urban Network Ring Power Ready: FZRN21-40.5 provides distribution, control and protection for urban network construction/transformation, industrial enterprises, high-rise buildings, public facilities as ring power supply unit or terminal equipment, featuring 95/110kV power frequency withstand voltage, 185/215kV lightning impulse withstand, 10000 mechanical life cycles, suitable for -25°C to +40°C environments at altitudes ≤1000m, delivering reliable indoor medium voltage vacuum load break switching solution.
| FZRN21-40.5 Vacuum Load Break Switch Specifications | Technical Parameters | Unit |
|---|---|---|
| Model Number | FZN21-40 / FZRN21-40 / FZRN21-40.5 | – |
| Brand | Bepto Insulation Systems | – |
| Product Type | Indoor AC High Voltage Vacuum Load Switch-Fuse Combination Units | – |
| Rated Voltage | 40.5 | kV |
| Rated Frequency | 50 | Hz |
| Number of Phases | Three-Phase | – |
| Maximum Rated Current of Fuse | 63 | A |
| Rated Active Load Breaking Current | 1250 | A |
| Rated Closed Loop Breaking Current | 1250 | A |
| Rated Cable Charging Breaking Current | 21 | kA |
| Rated Short-Circuit Breaking Current | 31.5 | kA |
| Rated Short-Circuit Making Current | 80 (Expected Peak Value) | kA |
| Rated Peak Withstand Current | 50 | kA |
| 4s Rated Short-Time Withstand Current | 20 | kA |
| 1min Power Frequency Withstand Voltage | 95 / 110 | kV |
| Lightning Impulse Withstand Voltage | 185 / 215 | kV |
| Mechanical Life | 10000 | cycles |
| Isolation Feature | Visible Isolation Fracture | – |
| Ground Switches | Combined Installed | – |
| Operating Mechanism | Spring Mechanism | – |
| Control Capability | Remote Control | – |
| Ambient Temperature | -25 to +40 | °C |
| Altitude | ≤1000 | m |
| Relative Humidity (Daily Average) | ≤95 | % |
| Contamination Level | II | – |
| Installation Environment | Free from Fire, Explosion Hazard, Serious Filthy Places | – |
| Application | Ring Network Switchgear, Combined Substations, Urban Networks, Industrial Enterprises | – |
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.
