Mersen DN00UB60V450L N330246 Protistor High-Speed Fuse, 450A 600VAC, Size DIN 00 aR, DIN 80 Bolted - Pack of 5

The Mersen (formerly Ferraz Shawmut) DN00UB60V450L is an extremely high-breaking capacity square-body fuse from the Protistor® PSC series. Engineered specifically for the protection of power semiconductors, this ultra-fast-acting fuse-link is designed to meet IEC 60269.1 and 4 standards. With a 450A current rating and aR utilization category, it provides premium-grade protection for diodes, thyristors, and other sensitive semiconductor devices in high-power conversion systems.

Key Features

• Ultra-Fast Acting (aR Class): Optimized for very low I²t and fast clearing times to minimize energy let-through during fault conditions, effectively safeguarding power electronics.
• Industrial-Standard Size: Complies with DIN 00 dimensions and features an 80mm mounting axis for standard industrial bolted connections (DIN 43653).
• Exceptional Breaking Capacity: Rated for a tested breaking capacity of 200kA at 600V AC, ensuring safety in even the most robust electrical environments.
• Low Power Dissipation: Engineered for thermal efficiency with a specific Watts loss rating of 74W at full load (In) to reduce heat buildup in power cabinets.
• Integrated Monitoring Capability: Features an indicating pawl (striker) designed to activate a microswitch for remote status signaling and system safety.

Technical Specifications

• Manufacturer: Mersen (Ferraz Shawmut)
• Series: Protistor® PSC Size 00
• Catalogue Number: DN00UB60V450L
• Amperage Rating: 450 A
• Voltage Rating: 600 V AC
• Utilization Category: aR (Ultra-fast acting)
• Breaking Capacity: 200 kA (Tested) / 300 kA (Estimated)
• Mounting Type: Bolted (DIN 80 - 80mm axis)
• Total Clearing I²t (@ Un): 196,000 A²s
• Pre-arcing I²t (@ 1ms): 51,850 A²s
• Watts Loss at In: 74 W
• Body Material: High-grade Ceramic
• Operating Indicator: Yes (Indicating Pawl/Striker)
• Package Quantity: 5 Pieces