Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
FN7-24D Load Break Switch: 24kV 630A spring mechanism LBS with fuse box, 50kA peak withstand, 900A fuse breaking, 25kA short-time, vacuum option available, -10°C to +40°C.
Advanced FN7 Load Break Switch Series: Premium FN7-24D load break switch designed for three-phase AC 50Hz 24kV power networks, used for breaking load current and controlling short-circuit current, featuring spring mechanism for switching ON/OFF supply with optional vacuum circuit breaker upgrade for enhanced reliability, delivering 630A rated current with 50kA rated short-circuit closing current and peak withstand current (dynamic steady), 25kA (1s/2s) and 16kA (3s) rated short-time withstand current (thermally stable), providing 900A maximum breaking capacity with fuse cooperation and 200A maximum fuse current.
Simple Installation with Fuse Box: FN7(C)-24 type incorporates integrated fuse box based on FN7-24 series with operating mechanism for simpler installation meeting customer needs, featuring 65kV power frequency withstand (ground/phase), 125kV lightning impulse, suitable for -10°C to +40°C environments at altitudes ≤1000m, providing reliable load break switching solution for 24kV three-phase AC power distribution networks requiring spring mechanism operation with optional vacuum circuit breaker.
| FN7-24D Load Break Switch Specifications | FN7-12 | FN7-24D | Unit |
|---|---|---|---|
| Model Number | FN7-12 | FN7-24D | – |
| Brand | Bepto Insulation Systems | Bepto Insulation Systems | – |
| Product Type | High Voltage Load Break Switch and Fuse Box Combination | High Voltage Load Break Switch and Fuse Box Combination | – |
| Operating Mechanism | Spring Mechanism (Vacuum Circuit Breaker Optional) | Spring Mechanism (Vacuum Circuit Breaker Optional) | – |
| Rated Voltage | 12 | 24 | kV |
| Rated Frequency | 50/60 | 50/60 | Hz |
| Rated Current | 630 | 630 | A |
| Rated Short-Circuit Closing Current | 50 | 50 | kA |
| Rated Peak Withstand Current (Dynamic Steady) | 50 | 50 | kA |
| Rated Short-Time Withstand Current (1s) | 31.5 | 25 | kA |
| Rated Short-Time Withstand Current (2s) | 20 | 25 | kA |
| Rated Short-Time Withstand Current (3s) | 18 | 16 | kA |
| Max Breaking Capacity (with Fuse Cooperation) | 1600 | 900 | A |
| Max Fuse Current | 200 | 200 | A |
| 1min Power Frequency Withstand (Ground/Phase) | 42 | 65 | kV |
| Power Frequency Withstand (Isolating Distance) | 48 | 79 | kV |
| Lightning Impulse Withstand 1.2/50μs (Ground/Phase) | 75 | 125 | kV |
| Lightning Impulse Withstand (Isolating Distance) | 85 | 145 | kV |
| Ambient Temperature | -10 to +40 | -10 to +40 | °C |
| Altitude | ≤1000 | ≤1000 | m |
| Relative Humidity (Daily/Monthly Average) | ≤90% / ≤95% | ≤90% / ≤95% | – |
| Application | Three-Phase AC 50Hz Power Networks, Load Current Breaking, Short-Circuit Control | Three-Phase AC 50Hz Power Networks, Load Current Breaking, Short-Circuit Control | – |
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.
