Mersen Protistor A070UD73TTI1600 High Speed Fuse, 1600A 690V, aR Size 73 Flush End Striker - Pack of 12

Product Overview The Mersen Protistor® A070UD73TTI1600 (Item Number: Q300877) is a high-performance square body fuse-link engineered for the ultimate protection of power semiconductor devices. This ultra-fast-acting aR-class fuse is specifically designed for demanding applications involving diodes, thyristors, and IGBT devices. Featuring a size 73 body with flush end UNC threads and an integrated striker, it provides maximum flexibility and reliability for modern power conversion equipment and industrial rectifiers.

Key Features

• Ultimate Semiconductor Protection: Utilization category aR provides ultra-fast clearing speeds to safeguard sensitive electronic components from catastrophic failure.
• High Interrupting Capacity: Rated to safely clear fault currents up to 200 kA at 690V AC, ensuring high-level safety for industrial power systems.
• Superior Thermal Management: Constructed with die-cut elements embedded in solidified sand, optimizing arcing control, lowering I²t levels, and managing a power dissipation of 203W at rated current.
• Robust Mechanical Design: Features silver-plated brass contact surfaces for superior conductivity and non-magnetic hardware for consistent performance in high-current environments.
• Integrated Indication: Includes a built-in striker to provide visual or remote signaling (when used with a microswitch) of fuse operation.
• Global Standard Compliance: Fully rated according to IEC 60947-4-1 (690V) and UL Recognized (700V) for international versatility.

Technical Specifications

• Manufacturer: Mersen (formerly Ferraz Shawmut)
• Series: Protistor® Size 73
• Catalog Number: A070UD73TTI1600
• Ref Number: Q300877
• Amperage Rating: 1600A
• Voltage Ratings: 690 VAC (IEC) / 700 VAC (UL)
• Utilization Category: aR
• Breaking Capacity: 200 kA
• Mounting Style: Flush ends / UNC threads (TTI)
• Clearing I²t at Rated Voltage: 5740 kA²s
• Body Material: High-grade Ceramic
• Indication: Integrated Striker
• Package Quantity: 12 Pieces