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.
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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.
