Sinofuse RS308-HB-4G25A Fuse, 25A 1000VAC/750VDC, aR Fast-Acting Bolt-on, Size 4G - Pack of 10

High-Speed Semiconductor Protection Fuse for High-Voltage Applications

The Sinofuse RS308-HB-4G25A is a specialized high-speed bolt-on fuse designed for the reliable protection of power semiconductor devices. With a 25A current rating and a dedicated Size 4G form factor, this fuse provides essential protection for sensitive electronics in modern power systems, including Electric Vehicle (EV) charging stations, solar PV inverters, and battery energy storage systems (BESS).

Classified under the aR utilization category, the RS308-HB series is engineered for partial-range short-circuit protection. It is specifically optimized to offer extremely low let-through energy, which is critical for preventing thermal damage to high-power semiconductors such as IGBTs, thyristors, and rectifiers. The Size 4G bolt-on construction provides a robust, high-integrity mechanical connection, ensuring stable performance in environments subject to thermal cycling and industrial vibrations.

Key Features:

• Precision High-Speed Protection: Designed with aR characteristics for the ultra-fast interruption of overcurrents in power electronic circuits.
• High Voltage Range: Rated for operational voltages up to 1000V AC and 750V DC, supporting a wide array of industrial and renewable energy architectures.
• Engineered for Reliability: Features low power loss and low temperature rise, contributing to the longevity and efficiency of the overall system.
• Secure Bolt-on Mounting: The 4G physical size offers precise terminal spacing for secure mounting to busbars, minimizing contact resistance.
• Global Standard Adherence: Manufactured and tested to meet the rigorous safety requirements of IEC 60269-4 and UL 248-13, ensuring industrial-grade quality and safety.