GB/T 13539.4-2016

This standard specifies supplementary requirements for fuse-links used to protect semiconductor devices, such as diodes, thyristors, and power transistors, in low-voltage electrical circuits. It is applied in industries like power electronics, industrial drives, and uninterruptible power supplies (UPS), where fuses must handle high inrush currents and provide fast, reliable interruption to prevent damage to sensitive semiconductor components. The standard defines performance characteristics, testing methods, and coordination criteria specific to these fuse-links, ensuring safe operation in equipment like inverters, rectifiers, and motor controllers.