Sinofuse EV315-M-5M-300A Electric Vehicle Fuse, 300A 500V DC, High-Speed Bolt-on

The Sinofuse EV315-M-5M-300A is a premium high-speed fuse designed for superior circuit protection in Electric Vehicle (EV) and Hybrid Electric Vehicle (HEV) power systems. Engineered for high-voltage DC applications, this 300A fuse provides dependable protection for main battery circuits, power distribution units (PDU), and motor controllers, effectively isolating faults to protect sensitive downstream electronic components.

Built with a high-density ceramic body and robust "M-5M" bolt-down terminals, the EV315 series is specifically optimized to endure the extreme mechanical stresses, including high-frequency vibrations and thermal fluctuations, prevalent in automotive environments. Its ultra-fast response characteristic ensures minimal let-through energy (I²t), safeguarding high-value semiconductor systems such as IGBTs and high-capacity battery cells. This product meets rigorous international automotive standards, ensuring safety and longevity for professional-grade EV energy storage and distribution solutions.

Technical Specifications

• Manufacturer: Sinofuse (Xi'an Sinofuse Electric Co., Ltd.)
• Model Number: EV315-M-5M-300A
• Current Rating: 300A
• Voltage Rating: 500V DC
• Interrupting Rating (Breaking Capacity): 20kA @ 500V DC
• Mounting Type: Bolt-on / Stud Mount
• Pre-arcing I²t: 24500 A²s
• Total Clearing I²t: 83500 A²s (@ 500V DC)
• Power Dissipation (Loss): ≤ 46.0W
• Operating Temperature Range: -40°C to +125°C
• Standards Compliance: ISO 8820, JASO D622, UL 248-20, RoHS
• Primary Application: EV/HEV Battery Packs, DC Power Distribution, Traction Inverters