Littelfuse L25S350 Semiconductor Fuse 350A 200VDC Very Fast-Acting 20000A Interrupting Rating

The L25S Series from Littelfuse exemplifies cutting-edge technology in semiconductor protection with its ability to reliably interrupt overcurrents up to 200,000 amperes, ensuring compliance with current and future system requirements. Designed for extremely current-limiting capabilities, this fast-acting fuse features low I²t and peak let-through currents, making it ideal for safeguarding sensitive semiconductor devices. Recognized by Underwriters Laboratories, this reliable fuse not only meets stringent safety standards but also serves as an effective means of supplementary protection in UL-listed equipment, confirming its critical role in advanced electrical systems. With an ampere rating of 350 and an interrupting capacity of 20,000 A at 200 VDC, this component is engineered for exceptional performance in high-demand applications.

• High interrupting rating of 200,000 A at 250 VAC and 20,000 A at 200 VDC
• Very fast-acting opening speed for rapid circuit interruption
• Extremely current-limiting design with low I²t and peak let-through currents to protect sensitive semiconductor devices
• UL Recognized certification ensuring compliance with stringent safety standards
• Melamine body for electrical insulation and thermal stability
• Silver-plated copper alloy caps for enhanced conductivity and corrosion resistance
• Wide operating temperature range from -55 °C to +125 °C for versatile environmental use
• Direct bus-bar or stud mount design for secure installation
• RoHS compliant for environmental safety

• Amperage: 350 A
• Voltage DC: 200 VDC
• Voltage AC: 250 VAC
• Interrupting Rating DC: 20000 A @ 200 VDC
• Interrupting Rating AC: 200 kA
• Opening Speed: Very Fast-Acting (FF)
• Time Constant: 10 ms
• Material Body: Melamine
• Material Caps: Copper Alloy, Silver Plated
• Operating Temperature: -55 °C to +125 °C
• Storage Temperature: Up to 35 °C with Relative Humidity <65%
• Compliance: UL Recognized, RoHS
• Country of Origin: Mexico

Datasheets

RoHS Declaration

Certification

ICP Test Report