Ferraz Shawmut TR3R Tri-Onic Dual-Element Time-Delay Fuse

The Ferraz Shawmut TR3R Tri-Onic Dual-Element Time-Delay Fuse is a 3 Amp, 250 VAC protective device designed to guard electrical circuits from overcurrent while tolerating brief surges. As a dual-element time-delay fuse, it blends fast-acting and delayed response characteristics to prevent nuisance trips during startup or transient overloads. The TR3R Tri-Onic designation identifies a line of protection fuses built to deliver reliable current interruption within its stated ratings. The dual-element design enables short-term surges to pass untripped while still opening the circuit if the overload persists, making it suitable for circuits that experience inrush currents or transient spikes. With a 3 A current rating and 250 VAC maximum voltage, this fuse provides controlled protection for power supplies, control panels, and other equipment where stable protection is required without false trips. It is intended for applications that require dependable, time-delayed protection within the specified electrical limits.