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LITTELFUSE FLNR400 Time-Delay Blade Fuse - Time-Delay Blade Fuses
LITTELFUSETime-Delay Blade Fuses

LITTELFUSE FLNR400 Time-Delay Blade Fuse

The LITTELFUSE FLNR400 is a Class RK5, time-delay blade fuse rated at 400 A, 250 V AC and 125 V DC. Part of the FLNR Series, this non-indicating fuse is designed for overcurrent protection in industrial electrical…

SKU 3G-OTH-27136

Also listed as: FLNR 400 · FLNR-400

Brand
LITTELFUSE
Item
FLNR400 Time-Delay Blade Fuse
Part Number
FLNR400
Category
Time-Delay Blade Fuses
Available to Order
Also known as:FLNR400LITTELFUSE
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

LITTELFUSE
Manufacturer Part Number
FLNR400
Series
FLNR
Type
FLNR Series, Time-Delay, 400 A, Non-Indicating
AC
250 V
DC
125 V

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LITTELFUSE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The LITTELFUSE FLNR400 is a Class RK5, time-delay blade fuse rated at 400 A, 250 V AC and 125 V DC. Part of the FLNR Series, this non-indicating fuse is designed for overcurrent protection in industrial electrical systems.

Frequently Asked Questions

What is the LITTELFUSE FLNR400 fuse used for?

The LITTELFUSE FLNR400 is a Class RK5, time-delay fuse rated for 400 A at 250 V AC or 125 V DC. It protects industrial motor circuits, feeders, and branch circuits against overloads and short circuits, with time-delay characteristics to handle inrush currents without nuisance opening.

What are the specifications of the LITTELFUSE FLNR400 fuse?

The LITTELFUSE FLNR400 is a non-indicating, time-delay blade fuse from the FLNR Series. It has an AC voltage rating of 250 V and a DC voltage rating of 125 V, with a current rating of 400 A. The manufacturer part number is FLNR400, and it is a Class RK5 fuse.

Where to buy LITTELFUSE FLNR400 fuses worldwide?

You can source the LITTELFUSE FLNR400 fuse through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine LITTELFUSE components for industrial applications.

How to select the correct LITTELFUSE FLNR400 fuse for an application?

To select the LITTELFUSE FLNR400, verify your circuit's voltage (max 250 V AC or 125 V DC) and continuous current (400 A). Ensure the Class RK5 time-delay characteristic matches your motor or transformer inrush requirements. Always consult the manufacturer's data sheet for coordination with upstream protection devices.

Used in

Common applications for LITTELFUSE
Industrial drives — Littelfuse PSR series semiconductor fuses for overcurrent protection of variable-frequency drives and DC bus circuits.
Branch circuit protection — Littelfuse CCMR series time-delay fuses in control panels and distribution boards.
Compact equipment — Littelfuse SLC series Class G fuses in rejection-style holders for space-constrained branch circuits.
Main service entrance — Littelfuse KLPC series Class L bolt-on fuses for high-current industrial power distribution.
Motor circuits — Littelfuse FLSR series Class RK5 time-delay fuses for motor branch circuits and transformers.
Power supplies — Littelfuse 473 series axial-lead time-delay fuses for solder-in protection in power supplies and instrumentation.
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LITTELFUSE Products

3G Electric supplies LITTELFUSE time-delay blade fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Class RK5, time-delay blade fuse rated 300 A at 600 V AC or 300 V DC. Features a visual blown-fuse indicator for quick identification. Suitable for overcurrent protection in motor circuits, transformers, and branch circuits with high inrush currents
LITTELFUSE
Class RK5, time-delay blade fuse rated 300 A at 600 V AC or 300 V DC. Features a visual blown-fuse indicator for quick identification. Suitable for overcurrent protection in motor circuits, transformers, and branch circuits with high inrush currents

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