Sinofuse RSZ307-01-J4P High-Speed Fuse, 500A 750V DC, aR Protection for EV & Energy Storage - Pack of 3

The Sinofuse RSZ307-01-J4P is a high-performance, square-body DC fast-acting fuse designed specifically for the rigorous demands of Electric Vehicle (EV) power systems and Battery Energy Storage Systems (BESS). Engineered by Xi'an Sinofuse Electric Co., Ltd., this fuse features a compact design with low temperature rise and high breaking capacity, providing reliable circuit protection for power batteries, drive systems, and power distribution units (PDU).

Key Features

• Specialized DC Protection: Rated at 750V DC, optimized for intermediate voltage battery strings and heavy-duty industrial DC architectures.
• High-Speed Interruption: Utilizing an "aR" (Partial range) utilization category to ensure ultra-fast response times, effectively limiting I²t energy to protect sensitive power semiconductors.
• Thermally Optimized Design: Engineered for low power dissipation (74W at rated current) to minimize heat accumulation within enclosed power modules.
• Vibration & Shock Resistance: Specifically designed to meet GB/T 31465 standards for automotive safety and reliability, ensuring durability in high-vibration environments.
• Visual Fault Indication: Features a built-in visual indicator for rapid troubleshooting and maintenance efficiency.

Technical Specifications

• Manufacturer: Xi'an Sinofuse Electric Co., Ltd.
• Model Number: RSZ307-01-J4P-500A
• Rated Current: 500 A
• Rated Voltage: 750V DC
• Utilization Category: aR (IEC / Semiconductor Protection)
• Breaking Capacity: ≥ 50kA (L/R = 5~10ms)