Mersen A130UD73TTI450 (C301049) Protistor Fuse, 450A 1250VAC, High-Speed Square Body Size 73 - Pack of 3

The Mersen A130UD73TTI450 (C301049) is a premium Protistor® series high-speed square body fuse meticulously engineered for the protection of power semiconductor devices. This Size 73 fuse-link is designed for high-voltage applications, offering a current rating of 450A and a voltage capacity of up to 1300VAC (UL). It provides an ideal solution for critical equipment such as thyristors, diodes, and IGBT devices, where ultra-fast reaction times and high reliability are essential for preventing catastrophic component failure.

Key Features

• Ultra-Fast Semiconductor Protection: Classified under the "aR" utilization category, this fuse is optimized for high-speed performance with exceptionally low I²t let-through energy.
• Robust Interrupting Capacity: Capable of safely breaking high fault currents up to 126kA, ensuring superior protection for high-power industrial circuits.
• Advanced Internal Construction: Built with silver-plated contact surfaces and non-magnetic hardware to maximize conductivity and reduce heat generation. Die-cut elements are embedded in solidified sand to control arcing behavior.
• Mechanical Fault Indication: Features an integrated striker system that provides a visual trip-indication and can trigger an optional microswitch for remote fault detection.
• Industrial Standard Mounting: Equipped with UNC threaded flush-end terminals, providing a secure and stable bolted connection for heavy-duty power blocks.

Technical Specifications

• Manufacturer: Mersen
• Catalogue Number: A130UD73TTI450
• Item Number: C301049
• Current Rating: 450A
• Voltage Rating: 1250VAC (IEC) / 1300VAC (UL)
• Breaking Capacity: 126kA at 1250VAC
• Utilization Category: aR (High-Speed Semiconductor Protection)
• Body Size: 73
• Connection Style: Flush Ends (UNC Threaded)
• Melting I²t: 35.5 kA²s
• Clearing I²t: 290 kA²s (At rated voltage)
• Power Dissipation: 99W at rated current
• Body Material: Ceramic
• Package Quantity: 3 Pieces