Mersen PC32UD69V900A Protistor Fuse, 900A 690V AC, Size 32 aR, High-Speed Square Body with Striker - Pack of 3

The Mersen Protistor® PC32UD69V900A (Item Number X130116) is an ultra-fast acting square body fuse-link engineered for the high-end protection of power semiconductor devices. This Size 32 aR class fuse is highly optimized for 690V AC industrial environments, making it a critical safety component for high-power converters, heavy-duty industrial drives, and large-scale UPS systems. It is designed to provide rapid response to short-circuit currents, ensuring exceptionally low I²t let-through values to protect sensitive semiconductor components from thermal damage.

The fuse features a reinforced ceramic body for superior arc containment and mechanical durability. Silver-plated contact surfaces ensure low contact resistance and long-term reliability in high-current applications. Utilizing pure silver elements and high-purity silica sand, it manages a high breaking capacity of 200kA. This model is equipped with a mechanical striker, providing an immediate visual trip indication and the capability to actuate an optional microswitch for remote fault signaling and system protection.

Technical Specifications

• Manufacturer: Mersen
• Catalog Number: PC32UD69V900A
• Item Number: X130116
• Amperage Rating: 900A
• 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 (M10)
• Indication System: Integrated Mechanical Striker
• Pre-arcing I²t: 310 kA²s
• Total Clearing I²t at Rated Voltage: 2,050 kA²s
• Power Dissipation at Rated Current: 135W
• Standards Compliance: IEC 60269-4, UL 248-13 Recognized, CCC, RoHS Compliant
• Quantity: Pack of 3