Description
Littelfuse L50S Series High-Speed Fuses are designed
to protect today’s equipment and systems, and are
manufactured with Littelfuse-developed technology that
sets tomorrow’s standards for accuracy, consistent quality,
reliability, and predictable performance.
Littelfuse engineers have redefined High-Speed Fuse
Technology by using advanced metallurgical, polymer,
and materials research, mathematical modeling, and
computerized statistical analysis.

Features/Benefits
• Extremely Current Limiting
• Low Watt Losses
• Controlled Transient Over-voltages
• UL Recognized

Applications
• AC & DC Drives
• DC Common Bus Protection
• Power Converters
• UPS
• Soft-Starters

Specifications
Voltage Rating 500 Vac
450 Vdc
Amperage Rating 10, 12, 15, 20, 25, 30, 35, 40, 50, 60,
70, 80, 90, 100, 125, 150, 175, 200, 225,
250, 275, 300, 350, 400, 450, 500, 550,
600, 700, 800
Interrupting Rating AC: 200 kAIC
DC: 20 kAIC
Material Body: Melamine
Terminals: Copper (silver plated)
Mounting Type Cylindrical (10 - 30 A)
Bolted Tags (35 - 800 A)
Operating Temperature -55˚ C to +125˚ C
Storage Temperature Up to 35˚ C with relative humidity less than 65%
Approvals UL Recognized (File: E71611)
CSA Recognized (File: LR29862)
Environmental RoHS Compliant
Country of Origin Mexico