Sinofuse EV315-L-3E20A Bolt-Connected Fuse, 500VDC, 20A

The Sinofuse EV315-C-3E20A is a professional-grade high-speed DC fuse designed for the stringent safety requirements of electric and hybrid vehicle systems. With a rated current of 20A and a voltage rating of 500V DC, this fuse is engineered to protect semiconductor devices and auxiliary circuits, including battery management systems (BMS), DC/DC converters, and onboard charging units.

Part of the EV315 series, the C-3E20A model features a cylindrical ceramic body optimized for high thermal stability and resistance to mechanical vibration. It adheres to international automotive standards such as JASO D622 and ISO 8820, offering superior reliability in harsh environments. Its ultra-fast acting characteristics ensure minimal energy let-through, effectively shielding sensitive power electronics from short-circuit and overcurrent damage.

Technical Specifications

• Manufacturer: Sinofuse (Xi'an Sinofuse Electric Co., Ltd.)
• Model Number: EV315-C-3E20A
• Amperage Rating: 20A
• Voltage Rating: 500V DC
• Interrupting Rating (Breaking Capacity): 10kA at 500V DC
• Time Constant (L/R): 2±0.5ms
• Fuse Size / Structure: C-3E (Cylindrical Body)
• Pre-arcing I²t: 85 A²s
• Total Clearing I²t: 288 A²s (at 500V DC)
• Power Dissipation: 4.8W (at rated current)
• Color Code: Yellow (Indicates 20A rating)
• Standards Compliance: JASO D622, ISO 8820, GB/T 31465, RoHS
• Operating Temperature Range: -40°C to +125°C