Sinofuse RS308-HB-4G100A Fuse, 100A 1000VAC/750VDC, aR Fast-Acting Bolt-on, Size 4G - Pack of 10

High-Performance Semiconductor Protection Fuse for Heavy-Duty Power Electronics

The Sinofuse RS308-HB-4G100A is a heavy-duty, high-speed bolt-on fuse engineered to provide superior protection for power semiconductor devices. With a robust 100A rating, this fuse is specifically designed to handle the high-power demands of industrial frequency converters, large-scale UPS systems, and Electric Vehicle (EV) power distribution units (PDU). It belongs to the high-performance RS308 series, recognized for its exceptional reliability in high-voltage DC and AC environments.

Classified under the aR utilization category, the RS308-HB-4G is an ultra-fast acting fuse focused on partial-range short-circuit protection. Its primary function is to interrupt massive fault currents in milliseconds, effectively limiting the let-through energy. This ensures that sensitive high-power components, such as thyristors, diodes, and IGBT modules, are isolated from thermal and mechanical stress during a circuit failure. The Size 4G body features reinforced bolt-on terminals, providing a low-resistance path and high mechanical durability for mission-critical applications.

Key Features:

• High-Capacity Semiconductor Safety: Optimized aR-class performance ensures rapid clearing of short-circuit faults to protect modern power electronics.
• Dual-Voltage Rating: Rated for 1000V AC and 750V DC, providing a high degree of flexibility for both industrial grid applications and advanced battery energy storage systems.
• Advanced Bolt-on Form Factor: The 4G hardware design offers excellent anti-vibration characteristics and thermal management, making it ideal for vehicle-mounted and industrial installations.
• Robust Interrupting Rating: Featuring a 50kA breaking capacity, this fuse provides reliable isolation even in circuits with high prospective fault levels.
• Industrial Standard Compliance: Fully compliant with IEC 60269-4 and UL 248-13 standards, ensuring it meets the rigorous safety requirements of the global electrical industry.