Littelfuse L50S800 Semiconductor Fuse 800A 500VAC 450VDC Very Fast-Acting

Designed for high-performance applications, the L50S800 from Littelfuse is an advanced fuse that excels in current limiting capabilities, ensuring optimal protection for semiconductor devices. With an AC interrupting rating of 200 kAIC and a DC rating of 20 kAIC, it effectively handles overcurrents, making it suitable for evolving system demands. This fuse operates at a voltage rating of 500 VAC and 450 VDC, with a very fast-acting response designed to safeguard critical equipment in accordance with UL standards. Its UL recognition further establishes its reliability as a supplementary protective component in UL listed systems, making it an indispensable addition for enhancing electrical safety and performance in various applications.

• Extremely current limiting for semiconductor protection with low I²t and peak let-through currents
• Very fast-acting fuse opening to safeguard critical equipment
• High interrupting capacity with 200 kA AC and 20 kA DC ratings
• UL recognized for use in supplementary protection in UL listed systems
• Rated for high voltage applications up to 500 VAC and 450 VDC
• Copper terminals with silver plating for enhanced conductivity and corrosion resistance
• Operating temperature range of -55°C to +125°C for durable performance
• Cylindrical mounting for 10-30 A and bolted tags for 35-800 A for versatile installation
• RoHS compliant for environmental safety
• Low watts loss improving energy efficiency during operation

• Voltage: 500 Vac, 450 Vdc
• Amperage Rating: 10 A to 800 A
• Interrupting Rating AC: 200 kAIC
• Interrupting Rating DC: 20 kAIC (20000A@450VDC)
• Opening: Very Fast-Acting (FF)
• Mounting Type: Cylindrical (10-30 A), Bolted Tags (35-800 A)
• Fuse Torque: 15 N m (132.76 in-lb) for 35-600 A, 54 N m (477.94 in-lb) for 700-800 A
• Hardware Size: M8 (5/16") for 35-600 A, M12 (1/2") for 700-800 A
• Watts Loss at 100% Rated Current: 2 W (10 A) to 118 W (800 A)
• Watts Loss at 80% Rated Current: 1 W (10 A) to 60 W (800 A)
• Material: Body Melamine, Terminals Copper (silver plated)
• Operating Temperature: -55°C to +125°C
• Storage Temperature: Up to 35°C with humidity < 65%
• Compliance: UL Recognized, RoHS Compliant, CSA Recognized
• Country of Origin: Mexico

Datasheets

Certification

Environmental Info