Sinofuse EV315-3EN40A Electric Vehicle Fuse, 40A 500V DC, High-Speed Bolt-on - Pack of 10

The Sinofuse EV315-3EN40A is a specialized high-speed DC fuse designed for the high-demand safety requirements of Electric Vehicle (EV) and Hybrid Electric Vehicle (HEV) systems. With a rated current of 40A and a voltage capacity of 500V DC, this component provides essential overcurrent protection for power conversion equipment, battery management systems, and high-voltage auxiliary power distribution units (PDU).

The EV315 series is engineered to perform reliably under the harsh environmental conditions of the automotive industry, including significant mechanical shock, continuous vibration, and extreme temperature thermal cycling. Its fast-acting characteristic ensures low let-through energy (I²t) and peak current limitation, effectively shielding sensitive power electronics from catastrophic fault currents. The 3EN bolt-on terminal design provides a robust, low-impedance mechanical interface, ensuring stable electrical performance throughout the vehicle's lifecycle.

Technical Specifications

• Manufacturer: Sinofuse (Xi'an Sinofuse Electric Co., Ltd.)
• Model Number: EV315-3EN40A
• Current Rating: 40A
• Voltage Rating: 500V DC
• Interrupting Rating (Breaking Capacity): 20kA @ 500V DC
• Mounting Type: Bolt-on (3EN Terminal Type)
• Pre-arcing I²t: 255 A²s
• Total Clearing I²t: 1020 A²s (@ 500V DC)
• Power Dissipation (Loss): 8.0W
• Operating Temperature Range: -40°C to +125°C
• Standards Compliance: ISO 8820, JASO D622, GB/T 31465, RoHS
• Primary Application: EV/HEV Main/Auxiliary Power Systems, Battery Packs, On-Board Chargers (OBC)
• Quantity: Pack of 10