Mersen PC73UD10C1000TF / R300513 Protistor Size 73 aR High-Speed Fuse, 1000A, 1000VAC

The Mersen PC73UD10C1000TF (Reference Number: R300513) is a high-capacity Protistor® ultra-fast acting square body fuse-link designed for the essential protection of power semiconductor devices. Engineered for heavy industrial applications, this Size 73 aR-class fuse is ideal for high-power rectifiers, static converters, and DC-coupled motor drives where 1000VAC protection is required. It is designed to provide high-speed isolation of fault currents, protecting sensitive electronic components like thyristors and IGBTs from thermal and mechanical destruction. The TTF (Tapped Terminal Face) mounting style features M12 threaded inserts, allowing for a compact and secure direct-to-busbar installation that maintains low electrical contact resistance.