Mersen PC73UD69V16CTF / X300518 Protistor Size 73 aR High-Speed Fuse, 1600A, 690VAC

The Mersen PC73UD69V16CTF (Reference Number: X300518) is an ultra-fast acting square body fuse-link from the Protistor® series, specifically developed for the high-end protection of semiconductor power devices. This Size 73 aR-class fuse is the preferred solution for safeguarding power rectifiers, large UPS systems, and variable speed drives against catastrophic overcurrent events. Featuring a substantial current rating of 1600A and a voltage rating of 690VAC (IEC), this fuse is optimized for extremely low I²t let-through and low power dissipation. The TTF (Tapped Terminal Face) construction utilizes M12 threaded holes for direct, high-pressure contact with busbars, providing a vibration-resistant and space-saving installation in heavy-duty industrial switchgear and power electronics cabinets.