Littelfuse JLS400 Class J Fast-Acting 400A 600VAC Knife-Blade Fuse

The JLS400 from Littelfuse is a powerful fast-acting fuse designed for resistive loads and general-purpose circuits with minimal motor load. With an impressive interrupting rating of 200,000 A.I.R., it ensures reliable interruption of overcurrents, effectively protecting sensitive equipment like variable speed drives and rectifiers. Its current-limiting design prevents damage from the thermal and magnetic effects of short-circuit currents, making it an excellent choice for applications requiring quick overload protection. Furthermore, this compact fuse facilitates inventory management for manufacturers by allowing the standardization on 600 volt JLS fuses across various AC voltage ratings, helping to reduce costs while maintaining high performance.

• Fast-acting fuse for quick overload protection
• Current-limiting design reduces damage from short-circuit currents
• 200,000 A interrupting rating for reliable overcurrent interruption
• Protects sensitive equipment such as variable speed drives and rectifiers
• Suitable for resistive loads and general-purpose circuits with minimal motor load
• Standardized 600 V AC rating supports versatile AC voltage applications
• Compact size facilitates space-saving installation and inventory standardization
• Designed to meet Standard 248-8 Class J and Federal Specification WF-1814
• UL Listed, CSA Certified, CE Certified, QPL, and RoHS Compliant for assured safety and environmental standards

• Amperage: 400 A
• Voltage: 600 V AC
• Interrupting Rating: 200,000 A @ 600 V AC
• Fuse Type: Fast-Acting, Current-Limiting
• Dimensions: 3 3/4 in length, 5 27/32 in diameter
• Applicable Standards: Standard 248-8 Class J, Federal Specification WF-1814
• Compliance: UL Listed, CSA Certified, CE Certified, QPL, RoHS Compliant

Certification

Datasheets

Environmental Info