Sinofuse EV315-M-3E50A Electric Vehicle Fuse, 50A 500V DC, High-Speed Bolt-on

The Sinofuse EV315-M-3E50A is a high-performance, high-speed fuse specifically engineered for the heavy-duty demands of Electric Vehicle (EV) and Hybrid Electric Vehicle (HEV) protection circuits. With a 50A current rating and a 500V DC voltage rating, this component provides critical overcurrent protection for energy storage systems, Power Distribution Units (PDU), and high-current auxiliary automotive circuits.

The EV315 series features a bolt-on mounting design (M-3E configuration), ensuring a high-integrity mechanical connection that withstands the extreme vibrations and thermal shocks common in transportation applications. Its high-speed clearing capability is optimized to isolate faults rapidly, protecting sensitive power semiconductors and high-value vehicle batteries. This series is manufactured to rigorous automotive-grade quality standards, ensuring long-term stability and maximum safety.

Technical Specifications

• Manufacturer: Sinofuse (Xi'an Sinofuse Electric Co., Ltd.)
• Model Number: EV315-M-3E50A
• Current Rating: 50A
• Voltage Rating: 500V DC
• Interrupting Rating (Breaking Capacity): 20kA @ 500V DC
• Mounting Type: Bolt-on / Screw fixation (M-3E)
• Pre-arcing I²t: 1210 A²s
• Total Clearing I²t: 3880 A²s (@ 500V DC)
• Power Dissipation (Loss): 9.0W
• Body Dimensions: 10 x 38 mm (excluding mounting tabs)
• Operating Temperature Range: -40°C to +125°C
• Compliance Standards: ISO 8820, JASO D622, GB/T 31465, RoHS
• Application: EV/HEV PDU, battery storage, and high-power inverter protection