Mersen PC32UD69V350TF Protistor Fuse, 350A 690V AC, Size 32 aR, High-Speed Square Body with Striker - Pack of 3

The Mersen Protistor® PC32UD69V350TF (Item N302163) is a high-performance, ultra-fast acting square body fuse-link designed specifically for the protection of power semiconductor devices. This Size 32 aR class fuse provides superior protection for diodes, thyristors, and IGBT modules in critical power conversion applications such as industrial inverters, motor drives, and UPS systems.

Constructed from premium ceramic materials with silver-plated contact surfaces, the fuse features die-cut elements embedded in high-purity solidified sand. This design ensures optimal arcing control, leading to exceptionally low I²t clearing values and a high breaking capacity of 200kA. The unit is equipped with a mechanical striker for local visual indication or to interface with a remote microswitch. The TTF flush-end M10 metric thread design enables a reliable and compact bolted installation.

Technical Specifications

• Manufacturer: Mersen
• Catalog Number: PC32UD69V350TF (Item N302163)
• Amperage Rating: 350A
• Voltage Rating: 690V AC (IEC) / 700V AC (UL)
• Interrupting Rating (Breaking Capacity): 200kA
• Operating Class: aR (Ultra-Fast Acting / Semiconductor Protection)
• Body Size: 32
• Mounting Type: Flush Ends (M10 Metric Threads)
• Indication System: Integrated Striker
• Pre-arcing I²t: 8.9 kA²s
• Total Clearing I²t at Rated Voltage: 53.7 kA²s
• Power Dissipation at Rated Current: 71W
• Standards Compliance: IEC 60269-4, UL/CSA Recognized E76491, RoHS Compliant
• Net Weight: 0.55 kg (per unit)
• Quantity: Pack of 3