Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
FN5-12R Load Break Switch: 12kV 630A indoor HV LBS with fuse combination, 50kA closing, 31.5kA peak withstand, load/short-circuit breaking, 1250kVA transformer, -25°C to +40°C.
Advanced FN5-12 Load Break Switch-Fuse Combination: Premium FN5-12R indoor high voltage load switch and fuse combination electrical appliance designed for AC 50Hz 12kV power distribution networks, providing breaking load current and closing short-circuit current capabilities, featuring load switch with fuse cutting off short-circuit current for protection switching purposes, delivering 630A rated current with 50kA rated short-circuit closing current and 31.5kA rated peak withstand current (dynamic steady), capable of 20kA (2s) rated short-time withstand current (thermally stable), 630A rated closed-loop and active load breaking current, 10A rated cable charging breaking and 1250kVA rated no-load transformer breaking capacity.
12kV Distribution Network Ready: FN5-12R incorporates 42kV power frequency withstand voltage (ground/phase), 48kV isolation gap withstand, 75kV lightning impulse (ground/phase) and 85kV isolation fracture impulse, suitable for -25°C to +40°C environments at altitudes ≤1000m with 95% daily humidity, providing reliable indoor high voltage load break switching solution for 12kV distribution networks requiring load/short-circuit protection with proven fuse combination performance.
| FN5-12R Load Break Switch Specifications | 400A Model | 630A Model | Unit |
|---|---|---|---|
| Model Number | FN5-12R/400 | FN5-12R/630 | – |
| Brand | Bepto Insulation Systems | Bepto Insulation Systems | – |
| Product Type | Indoor High Voltage Load Switch and Fuse Combination Electrical Appliance | Indoor High Voltage Load Switch and Fuse Combination Electrical Appliance | – |
| Rated Voltage | 12 | 12 | kV |
| Rated Frequency | 50 | 50 | Hz |
| Rated Current | 400 | 630 | A |
| Rated Short-Time Withstand Current (Thermally Stable) | 12.5 (4s) | 20 (2s) | kA |
| Rated Peak Withstand Current (Dynamic Steady) | 31.5 | 50 | kA |
| Rated Closed-Loop Breaking Current | 400 | 630 | A |
| Rated Active Load Breaking Current | 400 | 630 | A |
| 5% Rated Active Load Breaking Current | 20 | 31.5 | A |
| Rated Cable Charging Breaking Current | 10 | 10 | A |
| Rated Breaking No-Load Transformer Capacity | – | 1250 | kVA |
| Rated Short-Circuit Closing Current | 31.5 | 50 | kA |
| Load Current Breaking Times | 20 (100% Load), 35 (60% Load), 75 (30% Load), 80 (5% Load) | 20 (100% Load), 35 (60% Load), 75 (30% Load), 80 (5% Load) | Times |
| 1min Power Frequency Withstand Voltage (Ground/Phase) | 42 | 42 | kV |
| Power Frequency Withstand Voltage (Isolation Gaps) | 48 | 48 | kV |
| Lightning Impulse Withstand Voltage (Ground/Phase) | 75 | 75 | kV |
| Lightning Impulse Withstand Voltage (Isolation Fracture) | 85 | 85 | kV |
| Opening/Closing Operation Torque (Force) | 90 N·m (180 N) | 100 N·m (200 N) | N·m (N) |
| Ambient Temperature | -25 to +40 (Electric: -5 to +40) | -25 to +40 (Electric: -5 to +40) | °C |
| Altitude | ≤1000 | ≤1000 | m |
| Relative Humidity (Daily/Monthly Average) | ≤95% / ≤90% (+25°C) | ≤95% / ≤90% (+25°C) | – |
| Application | 12kV Power Distribution Networks | 12kV Power Distribution Networks | – |
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.
