Bussmann FNM-25USNT is a time-delay ferrule fuse in the FNM family, sized 13/32 in diameter by 1-1/2 in long with ferrule end caps. It is rated for 25 A at 250 VAC and provides a 10 kA interrupting rating, designed to tolerate brief inrush currents while protecting the circuit. As a supplemental (Class CC) time-delay fuse, it's commonly used for protections in power transformers, motor-start circuits, and other industrial control applications where inrush currents occur.
