Sinofuse RSZ307-01-J4P High-Speed Fuse, 315A 750V DC, aR Protection for EV & Energy Storage - Single Unit

The Sinofuse RSZ307-01-J4P is a high-speed, square-body fuse specifically engineered for high-power DC circuit protection. With a focused rating of 750V DC, this fuse is a critical component for safeguarding Electric Vehicle (EV) systems, Power Distribution Units (PDU), and battery energy storage infrastructures. It is designed to provide ultra-fast clearing of fault currents, protecting sensitive power semiconductors from catastrophic failure.

Key Features

• Optimized DC Performance: Specifically rated for 750V DC, making it the industry standard for intermediate voltage battery systems and industrial DC drives.
• High-Speed Response: Utilizing the "aR" class characteristic, it delivers ultra-fast interruption to minimize the I²t (let-through energy) during short-circuit events.
• Robust Construction: Features a high-strength ceramic body and silver-plated copper terminals for low resistance and superior thermal stability under continuous heavy loads.
• Application Specific: Ideal for EV traction inverters, DC-DC converters, and heavy-duty charging stations where compact, reliable DC protection is mandatory.
• Certified Reliability: Manufactured by Xi'an Sinofuse to meet rigorous automotive and industrial standards, ensuring long-term durability in high-vibration environments.

Technical Specifications

• Manufacturer: Xi'an Sinofuse Electric Co., Ltd.
• Model/SKU: RSZ307-01-J4P
• Amperage Rating: 315 A
• Voltage Rating: 750 V DC
• Utilization Category: aR (High-speed semiconductor protection)
• Interrupting Rating: 100kA @ 750V DC (Typical for -01 series)
• Body Material: High-grade Ceramic
• Terminal Type: J4P (Blade/Bolted Tag specialized for high-current connectivity)
• Standard Compliance: Designed to meet UL 248-13 and IEC 60269-4 requirements.
• Main Application: EV Power Systems, ESS, and Industrial Rectifiers.