Sinofuse RSZ307-01-J4P High-Speed Fuse, 450A 750V DC, aR Protection for EV & Energy Storage - Pack of 3

The Sinofuse RSZ307-01-J4P-450A is a professional-grade, high-speed square body fuse engineered for advanced DC power circuit protection. It is specifically designed for Electric Vehicle (EV) traction systems, battery energy storage systems (BESS), and industrial power electronics. This fuse excels in providing high-speed clearing of short-circuit faults, ensuring the safety of conductors and high-value semiconductor components.

Key Features

• High DC Performance: Rated for 750V DC, making it ideal for the high-voltage energy systems used in modern electric transport and renewable energy storage.
• Advanced aR Protection: Features the "aR" utilization category, providing ultra-fast response to overcurrent events and minimizing let-through energy (I²t) to protect sensitive power electronics.
• Compact & Efficient: Designed for high power density with a compact footprint, featuring a low temperature rise and a power dissipation of 66W at rated current.
• Rugged Reliability: Built to meet GB/T 31465 automotive standards, offering superior resistance to mechanical shock and vibration (up to 10g acceleration), suitable for railway and automotive environments.
• Visual Status Monitoring: Equipped with a visual fault indicator to allow for immediate status identification during maintenance inspections.

Technical Specifications

• Manufacturer: Xi'an Sinofuse Electric Co., Ltd.
• Model Number: RSZ307-01-J4P-450A
• Rated Current: 450 A
• Rated Voltage: 750 V DC
• Utilization Category: aR (High-speed semiconductor protection)
• Breaking Capacity: ≥ 50kA (L/R = 5~10ms)