Sinofuse EV315-M-3E20A Electric Vehicle Fuse, 20A 500V DC, High-Speed Bolt-on

The Sinofuse EV315-M-3E20A is a high-speed bolt-on fuse optimized for the demanding electrical environments of Electric Vehicles (EV) and Hybrid Electric Vehicles (HEV). With a 20A current rating and a 500V DC voltage rating, this component is purpose-built to provide robust circuit protection for battery management systems (BMS), power distribution units (PDU), and various automotive auxiliary circuits.

Engineered with a bolt-on terminal structure (M-3E), this fuse offers superior mechanical stability, making it highly resistant to the vibration and mechanical shock typical of road vehicle applications. Its high-speed clearing characteristics ensure that overcurrent events are mitigated rapidly, protecting sensitive power semiconductors and high-voltage components. This series is manufactured in strict accordance with international automotive standards, ensuring long-term reliability and safety.

Technical Specifications

• Manufacturer: Sinofuse (Xi'an Sinofuse Electric Co., Ltd.)
• Model Number: EV315-M-3E20A
• Current Rating: 20A
• Voltage Rating: 500V DC
• Interrupting Rating (Breaking Capacity): 20kA @ 500V DC
• Mounting Type: Bolt-on / Screw fixation
• Pre-arcing I²t: 104 A²s
• Total Clearing I²t: 339 A²s (@ 500V DC)
• Power Dissipation (Loss): 4.5W
• Body Dimensions: 10 x 38 mm (excluding bolt-on tabs)
• Operating Temperature Range: -40°C to +125°C
• Standards Compliance: ISO 8820, JASO D622, GB/T 31465, RoHS
• Application: EV/HEV high-voltage circuit protection