BF-1 Series High-Voltage Fuse (300A – 7000A)

The BF-1 series is a heavy-duty high-voltage fuse engineered for AC 50/60Hz high-voltage power systems. Designed to meet extreme current demands, it provides reliable, high-performance overcurrent and short-circuit protection across a wide ampere range of 300A to 7000A, making it the ultimate solution for large-capacity industrial and utility applications.Ideal for critical power infrastructure, the BF-1 fuse effectively safeguards large transformers, high-power motors, capacitor banks, rectifiers, and industrial furnaces. Its superior current-limiting performance minimizes thermal and mechanical stress during faults, ensuring system stability and preventing costly equipment damage or downtime.

Key Features

• Ultra-Wide Current Range: 300A to 7000A full-scale coverage, supporting small to massive industrial loads with a single series.
• High Voltage Rating: Optimized for high-voltage applications, ensuring superior insulation and reliable performance in extreme conditions.
• Exceptional Current-Limiting: Fast-acting design rapidly limits peak let-through current, minimizing stress on connected equipment.
• High Breaking Capacity: Safely interrupts ultra-high fault currents (up to 50kA+), ensuring complete fault isolation and system safety.
• Low Energy Loss: Precision-engineered structure reduces power loss and temperature rise, enhancing overall operational efficiency.
• Robust Construction: Rugged, durable build resistant to shock, vibration, and harsh industrial environments (-40°C to +70°C).
• Global Standard Compliance: Manufactured to IEC 60282 and GB/T standards, with ISO 9001 certification, suitable for worldwide projects.
• Easy Integration: Standardized dimensions for straightforward installation and replacement in most high-voltage switchgear and RMUs.

Main Applications

The BF-1 300A-7000A fuse is widely applied in:

• Large power transformers in high-voltage substations
• Ultra-high-power industrial motors, generators, and drive systems
• Shunt capacitor banks and large-scale power compensation systems
• Industrial rectifiers, electric furnaces, and heavy electrical loads
• High-voltage switchgear, ring main units (RMUs), and compact substations
• Major industrial facilities: mining, metallurgy, petrochemical, manufacturing
• Large-scale renewable energy projects: wind farms, solar power stations

Why Choose BF-1 Fuses?

For power system engineers and industrial buyers, the BF-1 series offers unmatched reliability for high-current, high-voltage systems. Its ultra-wide current range eliminates the need for multiple product lines, while strict quality control ensures consistent performance and long service life. Whether for new project deployment or equipment retrofitting, BF-1 fuses provide cost-effective, comprehensive protection, reducing maintenance costs and ensuring uninterrupted power supply.