Mersen PC73UD10C900EF / E300637 Protistor Size 73 aR High-Speed Semiconductor Fuse, 900 A, 1000V AC
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The Mersen PC73UD10C900EF is a heavy-duty, ultra-fast acting Protistor® square body fuse-link natively designed for the uncompromising protection of high-power industrial conversion equipment. Built to rigid aR characteristic specifications, this Size 73 fuse delivers industry-leading current limitation and cyclic thermal endurance, providing maximum safety for critical semiconductor components such as diodes, thyristors, and IGBT clusters. Housed within a specially engineered arc-controlling solidified sand matrix and featuring silver-plated EF style notched blade connections, it boasts an impressive 167 kA breaking capacity, ensuring superior fault interruption for high-capacity motor drives, large-scale inverters, and enterprise UPS networks.
| Product ID (MPN) | PC73UD10C900EF |
| Order Code / Item Number | E300637 |
| Product Series | Protistor® Square Body High-Speed Fuses |
| Fuse Size | Size 73 |
| Speed / Characteristic | aR (Ultra-Fast Acting Semiconductor Protection) |
| Rated Current (In) | 900 A |
| Rated Voltage (AC) | 1000 V AC (IEC) / 1100 V AC (UL) |
| Rated Breaking Capacity | 167 kA AC |
| Terminals / Mounting Style | Type EF (Notched Blade Connections) |
| Pre-arcing I²t | 250 kA²s |
| Clearing I²t at Rated Voltage | 1440 kA²s |
| Power Dissipation (at In) | 170 W |
| Weight | 1.11 kg |
| Standards & Certifications | IEC 60269-4, VDE 636-23, UL/CSA Recognized (E76491) |
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