Mersen PC73UD90V11CEF / G300639 Protistor Size 73 aR High-Speed Semiconductor Fuse, 1100 A, 900V AC
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The Mersen PC73UD90V11CEF is a highly robust, ultra-fast acting Protistor® square body fuse-link expertly engineered for the uncompromising protection of high-capacity industrial power conversion machinery. Operating within the precise parameters of the aR characteristic class, this Size 73 fuse provides exceptional current limitation and cyclic thermal endurance to safeguard critical semiconductor components, including large-scale diodes, thyristors, and heavy-duty IGBT clusters. Housed within a specially engineered arc-controlling solidified sand matrix and featuring silver-plated EF style notched blade connections, it boasts a powerful 150 kA breaking capacity, ensuring superior fault interruption for heavy motor drives, inverters, and enterprise UPS networks.
| Product ID (MPN) | PC73UD90V11CEF |
| Order Code / Item Number | G300639 |
| Product Series | Protistor® Square Body High-Speed Fuses |
| Fuse Size | Size 73 |
| Speed / Characteristic | aR (Ultra-Fast Acting Semiconductor Protection) |
| Rated Current (In) | 1100 A |
| Rated Voltage (AC) | 900 V AC (IEC) / 1000 V AC (UL) |
| Rated Breaking Capacity | 150 kA AC |
| Terminals / Mounting Style | Type EF (Notched Blade Connections) |
| Pre-arcing I²t | 445 kA²s |
| Clearing I²t at Rated Voltage | 2280 kA²s |
| Power Dissipation (at In) | 208 W |
| Weight | 1.11 kg |
| Standards & Certifications | IEC 60269-4, VDE 636-23, UL/CSA Recognized (E76491) |
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