Sinofuse EV315-M-5N-400A Electric Vehicle Fuse, 400A 500V DC, High-Speed Bolt-on

The Sinofuse EV315-M-5N-400A is a heavy-duty, high-speed DC fuse designed for the critical protection of Electric Vehicle (EV) and Hybrid Electric Vehicle (HEV) power systems. With a robust 400A current rating and 500V DC operating voltage, this fuse is engineered to protect high-capacity battery packs, traction inverters, and high-voltage Power Distribution Units (PDUs) from short-circuit and overcurrent damage.

The "M-5N" bolt-on terminal architecture provides a secure, low-resistance mechanical connection that excels in high-vibration automotive environments. Featuring high-speed clearing characteristics, the EV315-M-5N-400A ensures extremely low let-through energy (I²t) to preserve the integrity of sensitive power semiconductors and battery architecture. This component is manufactured to meet rigorous automotive industry requirements, providing high-reliability circuit interruption for high-power electrification applications and large-scale energy storage systems.

Technical Specifications

• Manufacturer: Sinofuse (Xi'an Sinofuse Electric Co., Ltd.)
• Model Number: EV315-M-5N-400A
• Current Rating: 400A
• Voltage Rating: 500V DC
• Interrupting Rating (Breaking Capacity): 20kA @ 500V DC
• Mounting Type: Bolt-on (M-5N Terminal Style)
• Pre-arcing I²t: 58000 A²s
• Total Clearing I²t: 197000 A²s (@ 500V DC)
• Power Dissipation (Loss): ≤ 66.0W
• Operating Temperature Range: -40°C to +125°C
• Standards Compliance: ISO 8820, JASO D622, UL 248-20, RoHS
• Primary Application: Main Battery Pack Bus, HEV/EV Traction Systems, DC Fast Charging Stations