Cut-Off Characteristics

When a Fuse Link interrupts a high value of fault current, it chops off the current before it has time to reach its full value, in other words the Fuse Link current - limits. Current limiting is the most important feature of Fuse Link operation as it ensures that cables, motors, transformers and other equipment are protected from the potentially catastrophic effects of many thousands of amps of fault current, which could otherwise flow. The rate at which the Fuse Link chops off the potential fault current is shown on the cut-off current graph.