Mersen PC32UD69V315A Protistor Fuse, 315A 690V AC, Size 32 aR, High-Speed Square Body with Striker - Pack of 3

The Mersen Protistor® PC32UD69V315A (Item Number M130107) is a high-performance ultra-fast acting square body fuse-link designed for the protection of power semiconductors. As part of the 690V series, this Size 32 aR class fuse is specifically engineered to provide state-of-the-art protection for rectifiers, inverters, variable speed drives (VFDs), and UPS systems. It excels in limiting both peak let-through current and total clearing I²t energy, ensuring maximum safety for sensitive electronic components such as thyristors and SCRs.

This fuse features a high-grade ceramic body to manage significant thermal cycles and internal pressures. The contact surfaces are silver-plated to provide excellent electrical conductivity and resistance to oxidation. Its internal structure consists of pure silver elements embedded in high-purity silica sand, enabling a high breaking capacity of 200kA and rapid arc extinguishment. This model includes an integrated mechanical striker for local visual indication of fuse operation and can be paired with an optional microswitch for remote fault signaling.

Technical Specifications

• Manufacturer: Mersen
• Catalog Number: PC32UD69V315A
• Item Number: M130107
• Amperage Rating: 315A
• 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: 9.2 kA²s
• Total Clearing I²t at Rated Voltage: 62 kA²s
• Power Dissipation at Rated Current: 68W
• Standards Compliance: IEC 60269-4, UL 248-13 Recognized, CCC
• Quantity: Pack of 3