Sinofuse EV315-M-3E40A Electric Vehicle Fuse, 40A 500V DC, High-Speed Bolt-on

The Sinofuse EV315-M-3E40A is a high-speed protective fuse specifically designed for the rigorous demands of the Electric Vehicle (EV) and Hybrid Electric Vehicle (HEV) industries. Rated at 40A and 500V DC, it is ideal for protecting high-voltage auxiliary circuits, battery energy storage systems (BESS), and Power Distribution Units (PDU).

The "M-3E" bolt-on mounting configuration provides a secure, vibration-resistant electrical connection, making it suitable for heavy-duty automotive environments where thermal cycling and mechanical stress are constant. This fuse is optimized for high-speed performance to protect sensitive power semiconductors. It is built and tested according to international automotive safety standards, ensuring reliable interrupting performance and low power loss in a compact 10x38mm body format.

Technical Specifications

• Manufacturer: Sinofuse (Xi'an Sinofuse Electric Co., Ltd.)
• Model Number: EV315-M-3E40A
• Current Rating: 40A
• Voltage Rating: 500V DC
• Interrupting Rating (Breaking Capacity): 20kA @ 500V DC
• Mounting Type: Bolt-on (Screw fixation)
• Pre-arcing I²t: 510 A²s
• Total Clearing I²t: 1630 A²s (@ 500V DC)
• Power Dissipation (Loss): 7.5W
• Body Dimensions: 10 x 38 mm (excluding bolt terminals)
• Operating Temperature Range: -40°C to +125°C
• Standards Compliance: ISO 8820, JASO D622, GB/T 31465, RoHS
• Application: EV/HEV PDU, auxiliary power systems, DC-DC converters