Littelfuse JLS500 Class J Fuse 500A Fast-Acting 200000A IR 600VAC Knife-Blade

The JLS500 from Littelfuse is an advanced fuse designed specifically for applications requiring fast-acting overload protection, catering particularly to equipment that utilizes solid-state devices. Featuring a current-limiting design, this fuse ensures rapid interruption of damaging short-circuit currents, often quicker than traditional mechanical devices, which helps minimize thermal and magnetic damage to sensitive equipment. With a notable 200,000 A.I.R. rating, it simplifies circuit design by reducing the need for extensive short-circuit calculations and allowing for the use of standard 600-volt fuses across varied voltage ratings. Compact yet powerful, the JLS500 is particularly suited for general-purpose circuits with minimal motor loads and provides essential protection for variable speed drives and rectifiers, making it a reliable choice for modern electrical systems.

• UL Listed, CSA Certified, CE Certified, QPL, and RoHS compliant for safety and environmental standards
• Extremely current-limiting design to reduce thermal and magnetic damage during short circuits
• Fast-acting overload protection for sensitive solid-state devices and surge components
• 200,000 A interrupting rating ensures reliable high fault current interruption
• Knife-blade terminals provide secure and reliable electrical connections
• Standard 600 V AC rating compatible with various AC voltage applications
• Compact size suitable for space-limited installations
• Ideal for general-purpose circuits with minimal motor loads
• Simplifies circuit design by minimizing short-circuit calculations

• Amperage: 500 A
• Interrupting Rating: 200,000 A at 600 V AC
• Fuse Type: Fast-Acting
• Voltage: 600 V AC
• Length: 4 5/8 in
• Diameter: 1 1/8 in
• Standards: Standard 248-8, Class J
• Compliance: UL Listed, CSA Certified, CE Certified, QPL, RoHS Compliant

Certification

Datasheets

Environmental Info