The Bussmann FNM-3 Fusetron fuse is a 3 A, 250 VAC time-delay (dual-element) midget fuse designed for supplemental protection in small inductive circuits. It belongs to the FNM series and uses ferrule-end terminals with nickel-plated bronze end caps in a cylindrical body measuring 13/32 in. in diameter and 1-1/2 in. long. This non-indicating, Class CC/supplemental fuse delivers interrupting ratings of 10 kAIC at 125 VAC and 100 AIC at 250 VAC, making it suitable for protecting control circuits and inductive loads in equipment such as power supplies and control transformers. Typical applications include low-cost protection of 125 and 250 VAC inductive circuits in consumer electronics, control panels, and HVAC equipment.
