BUSS FNM-4 Fuse

The BUSS FNM-4 is Eaton Bussmann series midget time-delay fuse rated at 4 A and 250 V, designed to protect compact power and control circuits from overcurrent. With a dual-element construction for surge tolerance and ferrule-end terminations, it uses nickel-plated bronze endcaps and measures about 13/32 in (diameter) by 1-1/2 in long (approximately 10.3 x 38.1 mm). It offers an interrupt rating of 10 kAIC at 125 VAC and 200 AIC at 250 VAC, enabling reliable protection in equipment where brief overloads are common. Catalog number FNM-4, this 4-amp, 250-volt Bussmann midget fuse is non-indicating and part of the Bussmann series of fuses designed for compact installations in electronics assemblies, control panels, and small power supplies that require a time-delay protection device.