Sinofuse EV315-M-5M-250A Electric Vehicle Fuse, 250A 500V DC, High-Speed Bolt-on

The Sinofuse EV315-M-5M-250A is a professional-grade high-speed fuse engineered specifically for the protection of high-voltage systems in Electric Vehicles (EV) and Hybrid Electric Vehicles (HEV). With a 250A current rating and a 500V DC operating voltage, it is an essential safety component for main battery circuits, high-power DC distribution units, and traction motor inverters.

Designed to withstand the harsh mechanical environments of the automotive industry, the EV315 series features a high-strength ceramic body and specialized "M-5M" bolt-down terminals that ensure superior contact stability under constant vibration and thermal cycling. Its ultra-fast response time is calibrated to minimize let-through energy (I²t), providing critical protection for sensitive semiconductor devices such as IGBTs and high-capacity battery cells. This product complies with global automotive safety standards, ensuring reliable performance throughout the vehicle's lifespan.

Technical Specifications

• Manufacturer: Sinofuse (Xi'an Sinofuse Electric Co., Ltd.)
• Model Number: EV315-M-5M-250A
• Current Rating: 250A
• Voltage Rating: 500V DC
• Interrupting Rating (Breaking Capacity): 20kA @ 500V DC
• Mounting Type: Bolt-on / Screw Fixation
• Pre-arcing I²t: 13500 A²s
• Total Clearing I²t: 46000 A²s (@ 500V DC)
• Power Dissipation (Loss): ≤ 39.0W
• Operating Temperature Range: -40°C to +125°C
• Standards Compliance: ISO 8820, JASO D622, UL 248-20, RoHS
• Primary Application: Battery Management Systems (BMS), PDU, Main Traction Inverters