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.
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.
