Mersen A130UD73LI450 / E300683 Protistor Size 73 aR High-Speed Semiconductor Fuse, 450 A, 1250V AC
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The Mersen A130UD73LI450 is a premium ultra-fast acting Protistor® square body fuse-link expertly engineered for the ultimate protection of power conversion equipment. Operating within the aR characteristic class, this Size 73 fuse delivers leading-edge current limitation and superior thermal cycling capabilities, safeguarding sensitive semiconductor devices such as diodes, thyristors, and IGBTs from damaging short circuits. Featuring non-magnetic hardware, silver-plated LI slotted blade terminals, and precision die-cut elements encapsulated in solidified sand, it provides rapid fault clearing (126 kA breaking capacity) for mission-critical industrial drives and enterprise UPS systems.
| Product ID (MPN) | A130UD73LI450 |
| Order Code / Item Number | E300683 |
| Product Series | Protistor® Square Body High-Speed Fuses |
| Fuse Size | Size 73 |
| Speed / Characteristic | aR (Ultra-Fast Acting Semiconductor Protection) |
| Rated Current (In) | 450 A |
| Rated Voltage (AC) | 1250 V AC (IEC) / 1300 V AC (UL) |
| Rated Breaking Capacity | 126 kA AC |
| Terminals / Mounting Style | Type LI (Slotted Blades) |
| Pre-arcing I²t | 35.5 kA²s |
| Clearing I²t at Rated Voltage | 290 kA²s |
| Power Dissipation (at In) | 100 W |
| Standards & Certifications | IEC 60269-4, VDE 636-23, UL/CSA Recognized (E76491) |
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