The Ferraz Shawmut Tri-Onic TRM20 time-delay fuse is a 20 A slow-blow device designed for reliable overcurrent protection in AC power wiring. In the Tri-Onic series, it is rated for 250 VAC with a 10 kA interrupting rating, enabling it to handle brief inrush currents while safeguarding circuits from sustained overloads. Typical applications include electrical panels, motor circuits, and general power-distribution setups where protecting loads up to 20 A is required.
