Littelfuse L50S100 Semiconductor Fuse 100A 500VAC 450VDC Very Fast-Acting

The L50S100 fuse from Littelfuse is engineered to deliver exceptional protection and reliability in high-performance electrical systems. This fast-acting fuse boasts an impressive interrupting rating of 20 kAIC for DC applications and 200 kAIC for AC, making it suitable for both current demands and helping to safeguard sensitive electronic components. Its design incorporates extremely current-limiting characteristics with low I2t values, ensuring minimal peak let-through currents, which is particularly advantageous for semiconductor devices. As a UL Recognized component, it seamlessly integrates into UL-listed equipment, affirming its role in meeting stringent safety and performance standards in today’s advanced electrical environments.

• UL recognized for safety and regulatory compliance
• High interrupting rating of 20 kAIC DC and 200 kAIC AC
• Extremely current limiting to protect sensitive semiconductor devices
• Very fast-acting (FF) design for rapid circuit interruption
• Low I2t values minimize peak let-through current
• Operates reliably from -55°C to +125°C
• Bolted tag mounting for secure installation in 35-800 A systems
• Silver-plated copper terminals enhance conductivity and corrosion resistance
• Melamine body provides electrical insulation and thermal stability
• RoHS compliant for environmental safety

• Voltage: 500 Vac, 450 Vdc
• Amperage: 100 A
• Interrupting Rating: 20,000 A @ 450 Vdc, 200 kAIC AC
• Opening Type: Very Fast-Acting (FF)
• Operating Temperature: -55°C to +125°C
• Material: Body: Melamine, Copper Terminals (silver plated)
• Mounting Type: Bolted Tags (35 - 800 A)
• Power Loss at 100% Rated Current: 30 W
• Power Loss at 80% Rated Current: 16 W
• Fuse Torque: 15 N·m (132.76 in-lb)
• Hardware Size: M8 (5/16")
• Certifications: UL Recognized, CSA Recognized
• Environmental Compliance: RoHS Compliant
• Country of Origin: Mexico

Datasheets

Certification

Environmental Info