Sinofuse RS309-MD High Speed DC Fuse, 80A 500VDC, Power Semiconductor Protection - Pack of 10

The Sinofuse RS309-MD is a high-performance, high-speed fuse specifically engineered for DC circuit protection. Designed to safeguard power semiconductors and sensitive electronic components, this fuse is optimized for use in electric vehicle (EV) systems, battery energy storage, and industrial DC-link applications. The RS309 series is recognized for its compact design and high current-limiting capabilities, providing reliable fault isolation in the event of overcurrent or short-circuit conditions.

Key Features

• Specialized DC Protection: Optimized for 500VDC applications, offering superior performance compared to standard AC-rated fuses in DC environments.
• High-Speed Response: Featuring ultra-fast acting characteristics designed to minimize I²t (let-through energy), protecting IGBTs, thyristors, and other sensitive power electronics.
• Compact MD Design: The MD-style configuration ensures a space-efficient footprint, suitable for modern high-density power distribution units and EV battery packs.
• Excellent Thermal Stability: Constructed with high-quality materials to ensure low temperature rise and stable performance during continuous operation at rated current.
• Reliability: Manufactured to meet rigorous industrial standards for vibration and thermal shock resistance, ensuring longevity in mobile or demanding industrial environments.

Technical Specifications

• Manufacturer: Sinofuse
• Series: RS309
• Model: RS309-MD
• Amperage Rating: 80A
• Rated Voltage: 500VDC
• Application Class: High Speed / Semiconductor Protection
• Connection Type: Bolt-on / MD-style Terminals
• Body Material: High-Strength Ceramic
• Operating Temperature: Suitable for industrial and automotive ambient ranges
• Package Quantity: 10 Pieces