Littelfuse FLNR004 Industrial Cartridge Fuse 4A 250VAC Slo-Blo 20000A@125VDC

The FLNR Series by Littelfuse offers robust protection for a variety of electrical applications, ensuring the safety and reliability of fully-rated panelboards and loadcenters, industrial control panels, and switchboards. With an impressive interrupting rating of 200,000 A.I.R., this series is designed to reliably handle overcurrents, delivering rapid short circuit protection that outperforms traditional mechanical protective devices. Its precise, automated manufacturing guarantees an accurate and consistent response to overloads and short circuits, making it an invaluable component in service entrance switches and motor control centers. Whether used in general-purpose circuits or individual fused combination motor controllers, the FLNR004 is engineered to provide superior performance and peace of mind in demanding electrical environments.

• Dual-element design for advanced short circuit and overload protection
• Time delay (Slo-Blo) feature allowing temporary current surges without blowing
• High interrupting rating of 200,000 amperes for superior fault current handling
• Current limiting capability reduces let-through energy to protect downstream devices
• Precision automated manufacturing ensures consistent and reliable fuse performance
• Suitable for protection in service entrance switches and fully-rated panelboards
• Reliable protection of motor control centers and industrial control panels
• Accurate and consistent response to overloads and short circuits
• UL Listed, CSA Certified, and meets Federal Specification WF-1814 for safety compliance
• Rated for 250 VAC and 125 VDC operation for versatile use in AC and DC circuits

• Ampere Rating: 4 A
• Voltage AC: 250 V
• Voltage DC: 125 V
• Interrupting Rating AC: 200 kA rms symmetrical
• Interrupting Rating DC: 20 kA @ 125 V
• Fuse Type: Slo-Blo/Time Delay, Dual Element, Current Limiting
• Series: FLNR
• Approvals: UL Listed, CSA Certified, Federal Specification WF-1814

Certification

Datasheets