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LITTELFUSE FLNR400ID Time-Delay Blade Fuse, 400 A, 250 V AC/125 V DC, Indicating - Time-Delay Blade Fuses
LITTELFUSETime-Delay Blade Fuses

LITTELFUSE FLNR400ID Time-Delay Blade Fuse, 400 A, 250 V AC/125 V DC, Indicating

The LITTELFUSE FLNR-ID Series FLNR400ID is a Class RK5, time-delay blade fuse rated at 400 A, 250 V AC and 125 V DC, with an indicating feature. This time-delay fuse is designed for overcurrent protection in…

SKU 3G-OTH-28140

Brand
LITTELFUSE
Item
FLNR400ID Time-Delay Blade Fuse, 400 A, 250 V AC/125 V DC, Indicating
Part Number
FLNR400ID
Category
Time-Delay Blade Fuses
Available to Order
Also known as:FLNR400IDLITTELFUSE
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Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
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Technical Specifications

LITTELFUSE
Manufacturer Part Number
FLNR400ID
Series
FLNR-ID
Type
FLNR-ID Series, Time-Delay, 400 A, Indicating
AC
250 V
DC
125 V

Technical Documents

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

Product Description

The LITTELFUSE FLNR-ID Series FLNR400ID is a Class RK5, time-delay blade fuse rated at 400 A, 250 V AC and 125 V DC, with an indicating feature. This time-delay fuse is designed for overcurrent protection in industrial circuits, supporting applications across 14 departments including electrical, machining, and power transmission. As an authorised distributor for LITTELFUSE, 3G Electric combines broad industrial supply with specialist depth in controls to source and support this fuse.

Frequently Asked Questions

What is the LITTELFUSE FLNR400ID fuse used for?

The LITTELFUSE FLNR400ID is a Class RK5, time-delay fuse rated 400 A at 250 V AC or 125 V DC. It is designed for motor circuits, transformers, and other inductive loads where inrush current protection is needed. The indicating feature allows quick identification of a blown fuse, reducing downtime in industrial power distribution systems.

What are the specifications of the LITTELFUSE FLNR400ID?

The LITTELFUSE FLNR400ID is a Class RK5 time-delay fuse from the FLNR-ID series. It has a current rating of 400 A, voltage rating of 250 V AC and 125 V DC, and includes an indicating function. The manufacturer part number is FLNR400ID. It is designed for overcurrent protection in industrial equipment and panelboards.

Where to buy the LITTELFUSE FLNR400ID worldwide?

You can source the LITTELFUSE FLNR400ID 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. 3G Electric provides reliable sourcing for LITTELFUSE components to industrial buyers globally.

How to select the correct LITTELFUSE FLNR400ID fuse for an application?

To select the LITTELFUSE FLNR400ID, verify your circuit voltage does not exceed 250 V AC or 125 V DC, and the continuous load current is below 400 A. The time-delay characteristic handles motor start-up surges. Ensure the fuse holder or disconnect switch is rated for Class RK5 fuses. Consult the manufacturer's data sheet for coordination with upstream 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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