Mersen PC73UD13C400TF / L300505 Protistor Size 73 aR High-Speed Fuse, 400A, 1250VAC
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The Mersen PC73UD13C400TF (Item Number: L300505) is an ultra-fast acting Protistor® square body fuse-link, engineered for the high-performance protection of power semiconductor devices. This Size 73 aR class fuse is designed to safeguard diodes, thyristors, and IGBT modules by providing exceptionally low I²t values and high breaking capacity. Constructed with silver-plated copper terminals and pure silver elements, it ensures minimal power loss and maximum reliability in demanding environments. Featuring the TTF (Tapped Terminal) mounting style with M12 threads, it is commonly utilized in large scale power converters, DC drives, and industrial UPS systems.
| Manufacturer | Mersen (Ferraz Shawmut) |
| Catalog Number | PC73UD13C400TF |
| Item Number | L300505 |
| Fuse Size | 73 |
| Rated Current (In) | 400 A |
| Rated Voltage (IEC) | 1250 VAC |
| Utilization Category | aR (Ultra-fast-acting) |
| Breaking Capacity | 126 kA |
| Mounting Type | TTF (M12 Tapped Terminals) |
| Standard Compliance | IEC 60269-4, UL recognized |
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