Sinofuse RS308-HB-4G40A Fuse, 40A 1000VAC/750VDC, aR Fast-Acting Bolt-on, Size 4G - Pack of 10

High-Speed Semiconductor Protection Fuse for Industrial Power Systems

The Sinofuse RS308-HB-4G40A is an ultra-fast acting bolt-on fuse engineered specifically for the protection of power semiconductor devices. As part of the high-performance RS308 series, this fuse is optimized to safeguard rectifiers, thyristors, IGBTs, and other sensitive electronic components in high-voltage environments. It is a critical safety component for electric vehicle (EV) charging stations, battery energy storage systems (BESS), and industrial power converters.

This fuse belongs to the aR utilization category, providing high-speed clearing of short-circuit faults to minimize let-through energy. Its robust Size 4G round-body construction and integrated bolt-on terminals ensure a secure, vibration-resistant electrical connection. Designed to operate reliably under DC and AC power architectures, it offers a high breaking capacity of 50kA, ensuring the safe isolation of faulty circuits even under extreme conditions.

Key Features:

• Specialized Semiconductor Shielding: Optimized for ultra-fast response times to prevent catastrophic failure of power electronics during overcurrent events.
• Versatile Voltage Range: Fully rated for 1000VAC and 750VDC applications, providing flexibility across different power bus designs.
• Durable Bolt-on Design: Features rugged mounting tabs for Size 4G configurations, ensuring low contact resistance and excellent mechanical stability.
• Certified Safety Standards: Compliant with IEC 60269-4 and UL 248-13 standards, meeting stringent global requirements for high-speed fuse performance.
• Thermal Efficiency: Engineered for low power dissipation and minimal temperature rise, enhancing the longevity of surrounding components in dense enclosures.