Mersen PC32UD69V400A Protistor Fuse, 400A 690V AC, Size 32 aR, High-Speed Square Body with Striker - Pack of 3

The Mersen Protistor® PC32UD69V400A (Item Number P130109) is an ultra-fast acting square body fuse-link designed for the superior protection of power semiconductor devices. This Size 32 aR category fuse is specifically rated for 690V AC applications, providing high-speed clearing of electrical faults in demanding industrial environments. It is ideal for guarding rectifiers, inverters, variable speed drives (VFDs), and static UPS systems against the catastrophic effects of short circuits.

Engineered with a high-grade ceramic housing and silver-plated copper contact surfaces, the fuse ensures excellent thermal endurance and low contact resistance. The internal pure silver elements and high-purity silica sand ensure rapid arc quenching and a high breaking capacity of 200kA. This model features an integrated mechanical striker, enabling local visual identification of a blown fuse and interfacing with microswitches for remote circuit monitoring and system safety integration.

Technical Specifications

• Manufacturer: Mersen
• Catalog Number: PC32UD69V400A
• Item Number: P130109
• Amperage Rating: 400A
• Voltage Rating: 690V AC (IEC / UL)
• Interrupting Rating (Breaking Capacity): 200kA at 690V AC
• Operating Class: aR (Ultra-Fast Acting)
• Product Size: 32
• Mounting Configuration: Flush-End Metric Threads
• Indication System: Integrated Mechanical Striker
• Pre-arcing I²t: 19 kA²s
• Total Clearing I²t at Rated Voltage: 125 kA²s
• Power Dissipation at Rated Current: 80W
• Standards Compliance: IEC 60269-4, UL 248-13 Recognized, CCC
• Quantity: Pack of 3