Littelfuse FLNR450ID Indicator Knife-Blade Fuse 450A 300000A@250VDC Slo-Blo Time Delay

The FLNR450ID from Littelfuse is designed to enhance safety and efficiency in various electrical applications. Featuring a distinctive indicating window, operators can quickly identify whether a fuse has opened without the need for testing, significantly reducing downtime during maintenance. With its robust overload and short circuit protection capabilities, this fuse not only prevents equipment damage but also minimizes the risk of accidents by providing clear visual indication, even when the power is on or off. Ideal for individual fused combination motor controllers and distribution panelboards, this product excels in environments ranging from industrial control panels to service entrance switches. Moreover, the superior time-delay specifications ensure longevity and reduced nuisance openings, effectively lowering the overall fuse inventory required for diverse applications. The FLNR_ID series represents a reliable solution for protecting both fully-rated panelboards and motor circuits.

• Built-in indicating window for quick fuse status identification
• Dual-element time-delay design reduces nuisance openings
• Current limiting enhances circuit protection and reduces damage
• Rated for high interrupting capacity at 300,000 A DC and 200 kA AC
• Improves safety by minimizing exposure to live circuits
• Suitable for individual fused combination motor controllers and panelboards
• Robust design for industrial control panels and service entrance switches
• Compatible with Class RK5 fuse holders due to long length and diameter
• UL Listed, CSA Certified, and meets Federal Specification WF-1814
• Reduces fuse inventory through versatile application compatibility

• Voltage: 250 VAC, 125 VDC
• Ampere Rating: 450 A
• Interrupting Rating: 300000 A @ 250 VDC, 200 kA rms AC
• Fuse Type: Dual Element, Time Delay (Slo-Blo/Time Lag)
• Current Limiting: Yes
• Length: 8 5/8 in (219.1 mm)
• Diameter: 2 in (50.8 mm)
• Approvals: UL Listed, CSA Certified, QPL, Fed Spec WF-1814
• Series: FLNR_ID

Certification

Datasheets