Mersen PC93UG15C375TF Protistor High-Speed Fuse, 375A 1500VAC, Size 93 gR, Square Body Flush End with Striker (B076361)

Mersen Protistor® High-Speed Semiconductor Protection Fuse | 375A 1500VAC

The Mersen PC93UG15C375TF (Reference Number: B076361) is a premium ultra-fast-acting fuse from the Protistor® PSC series, specifically engineered for the high-performance protection of power semiconductor devices. This Size 93 square-body fuse is rated for 375A and 1500VAC, providing a robust safety solution for critical power electronics such as large-scale inverters, UPS systems, railway traction converters, and high-power motor drives.

Unlike standard semiconductor fuses, this "gR" class fuse provides full-range protection, capable of clearing both high-level short circuits and lower-level overloads. The Flush End design features metric threaded holes for a secure, low-inductance connection to busbars, ensuring efficient electrical conductivity and reduced heat generation. The unit is equipped with a mechanical Type TF striker, which provides a physical indication of a blown fuse and can be integrated with a microswitch for remote system monitoring.

Key Features:

• Full-Range gR Protection: Specifically designed to protect semiconductors against both overload and short-circuit faults.
• Extremely High Breaking Capacity: Capable of safely interrupting fault currents up to 150kA at 1500VAC.
• Low Energy Let-Through: Advanced internal silver element design minimizes I²t values to prevent damage to sensitive downstream components like SCRs and IGBTs.
• Optimized Thermal Management: Built with high-purity ceramic and silver-plated contacts for high reliability in continuous-duty industrial environments.
• Monitoring Ready: Features an integrated TF striker for local visual status and remote signaling compatibility.

Technical Specifications:

• Manufacturer: Mersen
• Series: Protistor® Square Body PSC
• Catalog Number: PC93UG15C375TF
• Reference Number: B076361
• Rated Current (In): 375 A
• Rated Voltage (Un): 1500 VAC
• Utilization Category: gR
• Breaking Capacity: 150 kA
• Fuse Size: 93
• Mounting Configuration: Flush End (Metric Threaded)
• Indicator: Mechanical Striker (Type TF)
• Standard Compliance: IEC 60269-4, VDE 0636-4