Bussmann FRN-R-1 Fusetron Time Delay Fuse Series

The Bussmann FRN-R-1 Fusetron Time Delay Fuse is a time-delay protection device in the FRN-R-1 series, designed to guard electrical circuits from overcurrent while tolerating brief current spikes. It is rated at 1.25 amps and 250 VAC, providing a defined threshold for circuits with modest continuous loads and occasional startup surges. Manufactured by Bussmann, this FRN-R-1 variant belongs to the Fusetron line known for reliable protection in AC power applications. The time-delay characteristic enables the fuse to withstand short, transient overcurrents without immediate interruption, reducing nuisance blows in equipment such as power supplies and control circuits that experience momentary current spikes. This specification-oriented fuse is suited for general electrical protection where a 1.25 A, 250 VAC rating matches the protection needs of small to medium loads within standard AC distribution or equipment enclosures.