Mersen Q300072 PC32UD69V900TF Fuse, 900A 690V AC, High-Speed aR Square Body, Size 32 Flush End with Striker

The Mersen Protistor® Q300072 (PC32UD69V900TF) is an ultra-fast acting square body fuse-link designed for the high-performance protection of power semiconductor devices. Engineered for diodes, thyristors, and IGBT modules, this Size 32 fuse provides superior protection for modern power conversion equipment.

Constructed with high-grade ceramic and silver-plated contact surfaces, the fuse utilizes die-cut elements embedded in solidified sand to ensure precise arcing control, low I²t levels, and a high breaking capacity. This model is equipped with a mechanical striker for visual indication or to activate a remote microswitch. The flush-end metric thread design ensures a secure, low-resistance connection in industrial bolted assemblies.

Technical Specifications

• Manufacturer: Mersen
• Catalog Number: PC32UD69V900TF (Item Q300072)
• Current Rating: 900A
• Voltage Rating: 690V AC (IEC) / 700V AC (UL)
• Interrupting Rating (Breaking Capacity): 200kA at rated voltage
• Operating Class: aR (Ultra-Fast Acting / Semiconductor Protection)
• Body Size: 32
• Mounting Type: Flush Ends (Metric Threads)
• Indication System: Integrated Striker
• Clearing I²t at Rated Voltage: 990 kA²s
• Melting I²t: 165 kA²s
• Power Dissipation at In: 110W
• Terminal Material: Silver-Plated Brass
• Standards Compliance: IEC 60269-4, UL Recognized, RoHS Compliant
• Dimensions: 59mm (W) x 65mm (H) x 50.6mm (L)