Mersen PC32UD50V1400TF Protistor Fuse, 1400A 500V AC, Size 32 aR, High-Speed Square Body with Striker - Pack of 3

The Mersen Protistor® PC32UD50V1400TF (Item Number C302176) is a high-performance ultra-fast acting square body fuse-link designed for the protection of power semiconductor devices. This Size 32 aR class fuse is engineered to provide state-of-the-art short-circuit protection for high-power electronics, including diodes, thyristors, and IGBT modules used in large-scale industrial rectifiers, wind turbine inverters, and heavy-duty motor drives.

Built with a high-durability ceramic body and silver-plated copper mounting surfaces, the fuse incorporates pure silver internal elements held in high-purity solidified sand. This construction ensures high breaking capacity and excellent thermal management, significantly reducing the I²t let-through energy to protect sensitive semiconductor junctions. The fuse includes an integrated Type T mechanical striker, allowing for local visual confirmation of a blown fuse or integration with a microswitch for remote status signaling. The TTF flush-end M10 metric threaded interface allows for low-inductance, direct bolted installation on electrical busbars.

Technical Specifications

• Manufacturer: Mersen
• Catalog Number: PC32UD50V1400TF
• Item Number: C302176
• Amperage Rating: 1400A
• Voltage Rating: 500V AC (IEC) / 550V AC (UL)
• Interrupting Rating (Breaking Capacity): 200kA at 500V AC
• Operating Class: aR (Ultra-Fast Acting)
• Product Size: 32
• Mounting Configuration: Flush-End M10 Metric Threads (TTF)
• Indication System: Integrated Mechanical Striker (Type T)
• Pre-arcing I²t: 810 kA²s
• Total Clearing I²t at Rated Voltage: 3200 kA²s
• Power Dissipation at Rated Current: 180W
• Standards Compliance: IEC 60269-4, UL/CSA Recognized E76491, RoHS Compliant
• Quantity: Pack of 3