
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
FZN25-12 Indoor Vacuum Load Switch: 12kV vacuum LBS, FZRN25 fuse combination, direct-acting isolation, compact lightweight, ring network/terminal supply, manual/electric, short-circuit protection.
Advanced FZN25-12 Vacuum Load Switch Series: Premium FZN25/FZRN25 vacuum load switches and combined electrical appliances designed for three-phase AC 50Hz ring network or terminal power supply and industrial electrical equipment, providing load control and short-circuit protection for 12kV systems, featuring direct-acting isolation fracture and vacuum arc extinguishing chamber linkage for switching load current, closed-loop current, no-load transformer and cable charging current, with FZRN25 combination breaking any current up to rated short-circuit capacity, utilizing unique transmission structure design where arc extinguishing chamber withstands high voltage only during closing/opening moments for compact size and lightweight construction.
Ring Network Terminal Supply Ready: FZN25/FZRN25 incorporates one-time operation of isolation fracture and arc extinguishing chamber fracture, featuring grounding valve linked to grounding switch between static contact and moving contact conductive tube for safety and maintenance convenience, available in manual and electric functions, providing reliable vacuum load switch or fuse combination solution for ring main units, terminal substations, industrial facilities requiring compact lightweight design with proven vacuum arc extinguishing performance.

| FZN25-12 Indoor Vacuum Load Switch Specifications | Technical Parameters | Unit |
|---|---|---|
| Model Number | FZN25-12 / FZRN25-12 | – |
| Brand | Bepto Insulation Systems | – |
| Product Type | Indoor Vacuum Load Switch / Vacuum Load Switch-Fuse Combination | – |
| Arc Extinguishing Technology | Vacuum Arc Extinguishing Chamber | – |
| Isolation Type | Direct-Acting Isolation Fracture | – |
| Rated Voltage | 12 | kV |
| Rated Frequency | 50 | Hz |
| Number of Phases | Three-Phase | – |
| Application Systems | Ring Network, Terminal Power Supply, Industrial Electrical Equipment | – |
| FZN25 Switching Capability | Load Current, Closed-Loop Current, No-Load Transformer, Cable Charging Current | – |
| FZRN25 Breaking Capability | Any Current up to Rated Short-Circuit Current | – |
| Fuse Combination | FZRN25 Series | – |
| Transmission Structure | Unique Design (Arc Chamber Withstands HV Only During Closing/Opening) | – |
| Size and Weight | Compact and Lightweight | – |
| Operation Type | One-Time Operation of Isolation and Arc Extinguishing Chamber Fracture | – |
| Grounding Valve | Linked to Grounding Switch Between Static and Moving Contact | – |
| Safety Feature | Grounding Valve for Safety and Maintenance Convenience | – |
| Operating Functions | Manual and Electric Functions Available | – |
| Application | Ring Main Units, Terminal Substations, Industrial Facilities | – |
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.

ceshi2ceshi2ceshi2ceshi2ceshi2

ceshiceshiceshiceshiceshiceshiceshiceshiceshiceshiceshiceshiceshiceshiceshiceshiceshiceshiceshiceshiceshi
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.