SINOFUSE RS309-MD-EVD-150A High-Speed Fuse, 150A 500VDC, Bolted-Blade EV/HEV Protection - Pack of 3

The SINOFUSE RS309-MD-EVD-150A is a professional-grade high-speed fuse engineered by Xi'an Sinofuse Electric Co., Ltd. specifically for the rigorous demands of Electric Vehicle (EV) and Hybrid Electric Vehicle (HEV) systems. Rated at 150A and 500VDC, this fuse provides essential protection for high-voltage DC circuits, ensuring the safety of critical power electronics against short-circuit events and overcurrent faults.

Design and Reliability Built with a high-strength ceramic housing and high-purity silver melting elements, the RS309-MD-EVD series offers exceptional arc-quenching capabilities and low power dissipation. The "EVD" designation represents a specialized bolted-blade mounting configuration, optimized for superior vibration resistance and mechanical stability within automotive environments. This design ensures low contact resistance and long-term reliability even under frequent thermal cycling and mechanical stress.

Key Technical Advantages

• Fast-Acting Performance: Features aR utilization characteristics designed to limit let-through energy (), providing rapid isolation to protect sensitive components like power semiconductor modules and battery cells.
• Enhanced Breaking Capacity: Rated for a high breaking capacity, allowing for the safe interruption of high-energy DC faults common in large-scale battery systems.
• Thermal Management: Optimized design for low temperature rise, contributing to the overall efficiency and longevity of the power distribution unit (PDU).

Typical Applications

• On-Board Charging (OBC): Protection for the AC/DC charging interface.
• Auxiliary Power Systems: Safeguarding DC/DC converters, electric air conditioning compressors, and heating modules.
• Battery Management Systems (BMS): Providing branch circuit protection within the high-voltage battery pack.
• Industrial DC Power: Protection for power conversion equipment and DC motors.

Compliance and Quality Standards

• Automotive Standards: Adheres to ISO 8820 and GB/T 31465 requirements for automotive fuses.
• Global Safety: Compliant with IEC 60269-4 / GB 13539.4 standards for semiconductor protection.
• Environmental Safety: RoHS compliant and CE certified.