Mersen A130UD73TTI550 / E301051 Protistor Size 73 aR Semiconductor Protection Fuse, 1300VAC, 550A

The Mersen A130UD73TTI550 / E301051 Protistor® fuse-links are engineered to provide maximum flexibility and premium protection for semiconductor devices including diodes, thyristors, and IGBTs. Part of the ultra-fast acting aR characteristic series, these square body fuses are designed for 1250/1300V power conversion equipment. This specific model features size 73 scaling with TTI 1/2in - 13 unified coarse threaded terminals for secure high-current mounting. Constructed with silver-plated contact surfaces and non-magnetic hardware, they ensure low I²t levels and high interrupting ratings for critical industrial AC protection.