Mersen PC32UD69V450TF Protistor Fuse, 450A 690V AC, Size 32 aR, High-Speed Square Body with Striker - Pack of 3

The Mersen Protistor® PC32UD69V450TF (Item J302159) is an ultra-fast acting square body fuse-link, specifically engineered for the high-performance protection of power semiconductor devices. This Size 32 aR class fuse is designed to minimize the thermal and magnetic effects of short-circuit faults, providing critical protection for diodes, thyristors, and IGBT modules in power converters, industrial drives, and UPS systems.

Constructed with a premium ceramic body and silver-plated contact surfaces, the fuse incorporates die-cut elements embedded in high-grade solidified sand. This design ensures precision arcing control, exceptionally low I²t clearing values, and a high breaking capacity of 200kA. This model features an integrated mechanical striker for visual trip indication or for the operation of a field-mountable microswitch. The TTF flush-end M10 metric threaded design provides a high-integrity, low-resistance bolted connection suitable for demanding industrial applications.

Technical Specifications

• Manufacturer: Mersen
• Catalog Number: PC32UD69V450TF
• Item Number: J302159
• Amperage Rating: 450A
• Voltage Rating: 690V AC (IEC) / 700V AC (UL)
• Interrupting Rating (Breaking Capacity): 200kA at 690V AC
• Operating Class: aR (Ultra-Fast Acting)
• Body Size: 32
• Mounting Type: Flush Ends (M10 Metric Threads)
• Indication System: Integrated Mechanical Striker
• Pre-arcing I²t: 23 kA²s
• Total Clearing I²t at Rated Voltage: 140 kA²s
• Power Dissipation at Rated Current: 75W
• Standards Compliance: IEC 60269-4, UL/CSA Recognized E76491, RoHS Compliant
• Quantity: Pack of 3