Mersen PC93UF15C250TF Protistor High-Speed Fuse, 250A 1500VAC, Size 93 aR, Square Body Flush End with Striker (X076357)

Mersen Protistor® High-Speed Semiconductor Protection Fuse | 250A 1500VAC

The Mersen PC93UF15C250TF (Reference Number: X076357) is an ultra-fast-acting fuse specifically engineered for the protection of high-power semiconductor devices. Part of the world-renowned Protistor® PSC series, this fuse is designed for heavy-duty industrial power electronics operating at voltages up to 1500VAC. It is an essential protective component for SCRs, thyristors, and IGBTs used in high-voltage rectifiers, railway traction systems, and large-scale industrial drives.

This Size 93 square-body fuse utilizes a high-grade ceramic housing and silver element leads to ensure superior thermal stability and rapid arc quenching. Its Flush End design facilitates a low-inductance connection directly to busbars, minimizing the risk of voltage spikes during fault interruption. The unit includes an integrated mechanical striker (Type TF), which provides a local physical indication of fuse operation and can be coupled with a microswitch for remote fault monitoring and circuit automation.

Key Features:

• High-Speed Fault Clearing: Categorized as utilization category aR, providing ultra-fast response to protect sensitive semiconductors from overcurrent damage.
• High Voltage Rating: Specifically rated for 1500VAC, making it suitable for high-density power distribution and conversion equipment.
• Minimized Energy Let-Through: Low I²t values ensure that thermal energy during a short-circuit is kept to a minimum, preserving the integrity of downstream components.
• Durable Industrial Construction: Features silver-plated contacts and a reinforced ceramic body for maximum reliability in harsh electrical environments.
• Status Indication: Equipped with a built-in TF striker for immediate visual verification and optional remote signaling integration.

Technical Specifications:

• Manufacturer: Mersen
• Series: Protistor® Square Body PSC
• Catalog Number: PC93UF15C250TF
• Reference Number: X076357
• Rated Current (In): 250 A
• Rated Voltage (Un): 1500 VAC
• Utilization Category: aR
• Breaking Capacity: 150 kA
• Fuse Size: 93
• Mounting Configuration: Flush End (Bolted)
• Indicator: Mechanical Striker (Type TF)
• Compliance: IEC 60269-4, VDE 0636-4