Mersen PC92UK15C350TF Protistor High-Speed Fuse, 350A 1500VAC, Size 92 aR, Square Body Flush End with Striker (J076161)

Mersen Protistor® High-Speed Semiconductor Protection Fuse | 350A 1500VAC

The Mersen PC92UK15C350TF (Part Number: J076161) is a high-performance ultra-fast semiconductor protection fuse within the specialized Protistor® PSC series. Engineered for Size 92 square body applications, this fuse is designed to protect large-scale power conversion equipment including SCRs, diodes, thyristors, GTOs, and IGBTs. It is optimized for heavy-duty industrial environments requiring a 350A current rating and high-voltage isolation up to 1500VAC.

This fuse-link adheres to the UK design specification, utilizing pure silver die-cut elements encapsulated in high-stability solidified sand. This internal architecture provides precise arcing control, resulting in extremely low I²t clearing values and an impressive breaking capacity of 200kA. The high-grade ceramic body ensures thermal and mechanical durability, while the silver-plated flush-end contacts provide high conductivity for bolted connections. Each unit includes an integrated mechanical striker for local visual indication of operation and is compatible with field-mountable microswitches for remote system monitoring.

Key Features:

• Ultra-Fast Response: aR utilization category ensures specialized high-speed short-circuit protection for sensitive power semiconductors.
• Superior Interrupting Rating: Safely clears faults up to 200kA at 1500VAC, suitable for high-energy rectifier and inverter circuits.
• Minimal Energy Let-Through: Engineered for very low I²t values to prevent catastrophic failure of downstream electronic devices.
• Flush-End Mounting: Square body design featuring metric threaded flush terminals for secure, space-efficient, and low-resistance electrical installation.
• Remote Signaling Capability: Includes a built-in striker to facilitate immediate fault detection via local inspection or remote microswitch integration.

Technical Specifications:

• Manufacturer: Mersen
• Series: Protistor® Square Body PSC
• Catalog Number: PC92UK15C350TF
• Item Number: J076161
• Rated Current (In): 350 A
• Rated Voltage (Un): 1500 VAC
• Utilization Category: aR
• Breaking Capacity (I.R.): 200 kA
• Maximum clearing I²t: 197 kA²s
• Power Dissipation (at In): 105 W
• Fuse Size: 92
• Mounting Type: Flush Ends (Metric threads)
• Standards Compliance: IEC 60269-4 / VDE 0636-4