Mersen PC92UH15C550TF Protistor High-Speed Fuse, 550A 1500VAC, Size 92 aR, Square Body Flush End with Striker (L076164)

Mersen Protistor® High-Speed Semiconductor Protection Fuse | 550A 1500VAC

The Mersen PC92UH15C550TF (Reference Number: L076164) is an industrial-grade ultra-fast-acting fuse designed for the demanding protection requirements of high-power semiconductor devices. As part of the Protistor® PSC series, it is specifically manufactured to protect SCRs, thyristors, and IGBTs in systems rated up to 1500VAC. With a 550A current rating and a Size 92 square body, this fuse is a critical component for ensuring the safety and uptime of large-scale power converters, industrial rectifiers, and renewable energy inverters.

Engineered with silver fused elements embedded in high-purity solidified sand, the PC92UH15C550TF provides superior breaking capacity and exceptionally low I²t let-through values. The flush-end bolted configuration (Size 92) ensures a low-resistance, high-reliability connection directly to busbars. This model is equipped with a mechanical striker (Type TF), which provides a visible indication of fuse operation and allows for the attachment of a microswitch for remote fault signaling and system protection logic.

Key Features:

• Ultra-Fast Acting Performance: Classified under utilization category aR, providing high-speed protection against short-circuit currents in electronic power equipment.
• High Voltage Capability: Optimized for 1500VAC applications, meeting the isolation requirements of heavy industrial power electronics.
• Superior Current Limiting: Engineered to minimize energy let-through, protecting sensitive semiconductor junctions from thermal damage.
• Durable Industrial Design: Features a high-strength ceramic body and silver-plated copper terminals for high conductivity and corrosion resistance.
• Integrated Monitoring: Built-in TF striker for immediate visual status and automated control system integration.

Technical Specifications:

• Manufacturer: Mersen
• Series: Protistor® Square Body PSC
• Catalog Number: PC92UH15C550TF
• Reference Number: L076164
• Rated Current (In): 550 A
• Rated Voltage (Un): 1500 VAC
• Utilization Category: aR
• Breaking Capacity: 200 kA
• Fuse Size: 92
• Connection Style: Flush End (Metric Threaded)
• Indicator: Mechanical Striker (Type TF)
• Standard Compliance: IEC 60269-4, VDE 0636-4