Littelfuse L50S500 Semiconductor Protection Fuse

Description:

The Little Fuse L50S500 Semiconductor Fuse is a high-speed semiconductor protection fuse used in industrial power conversion and motor drive systems to provide fast overcurrent and short-circuit protection. Commonly installed in variable frequency drives, UPS systems, rectifiers, and DC power supplies requiring reliable protection of sensitive semiconductor devices. Maintenance teams and system integrators use this fuse for replacement, retrofit, and expansion of power distribution systems to protect critical equipment and minimize downtime.

Applications:

The Little Fuse L50S500 is commonly used in variable speed drives, SCR drives, inverters, UPS systems, and industrial power conversion equipment where extremely fast fault clearing is required. Its current-limiting design provides dependable protection for semiconductors such as SCRs, diodes, thyristors, transistors, and IGBTs operating in demanding industrial environments.

Technical Specifications:

• Manufacturer Part Number (MPN): L50S500
• Product Type: High-Speed Semiconductor Fuse
• Manufacturer: Littelfuse
• Current Rating: 500 A
• Voltage Rating: 500 VAC / 450 VDC
• Fuse Type: Fast-Acting Semiconductor Fuse
• Mounting Type: Bolt Mount
• Interrupting Rating: 200 kA AC
• Application Environment: Industrial Power Conversion Systems

Common Replacements:

• Littelfuse L70S500
• Bussmann FWH-500A
• Mersen A50P500