Mersen PC73UD13C450TF / M300506 Protistor Size 73 aR High-Speed Fuse, 450A, 1250VAC
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The Mersen PC73UD13C450TF (Item Number: M300506) is a high-performance Protistor® square body fuse-link specifically engineered for the ultra-fast protection of power semiconductors. Optimized for 1250VAC applications, this Size 73 aR class fuse provides superior protection for diodes, thyristors, and IGBT devices by minimizing I²t let-through during fault conditions. The fuse features a pure silver element and is constructed with high-grade ceramics to ensure thermal stability and high breaking capacity. Its TTF mounting style, utilizing M12 tapped terminals, offers a compact and secure connection point for high-power density inverters and industrial conversion systems.
| Manufacturer | Mersen (Ferraz Shawmut) |
| Catalog Number | PC73UD13C450TF |
| Item Number (Reference) | M300506 |
| Fuse Body Size | 73 |
| Rated Current (In) | 450 A |
| Rated Voltage (VAC) | 1250 VAC (IEC) / 1300 VAC (UL) |
| Utilization Category | aR (Ultra-fast-acting) |
| Breaking Capacity | 126 kA @ 1250VAC |
| Mounting Type | TTF (M12 Tapped Terminals) |
| Indicator | Microswitch ready / Visual striker |
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