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LITTELFUSE Fuse: Class RK5, FLNR-ID Series, Time-Delay, 400 A, 250 V AC, 125 V DC - Time-Delay Blade Fuses
LITTELFUSETime-Delay Blade Fuses

LITTELFUSE Fuse: Class RK5, FLNR-ID Series, Time-Delay, 400 A, 250 V AC, 125 V DC

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
Fuse: Class RK5, FLNR-ID Series, Time-Delay, 400 A, 250 V AC, 125 V DC
Category
Time-Delay Blade Fuses
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Payment
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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
Power electronics protection — Littelfuse PSR Series semiconductor fuses for IGBT and diode protection in variable frequency drives.
Solar photovoltaic systems — Littelfuse SPF Series fast-acting fuses for string overcurrent protection in PV arrays.
Automotive electrical systems — Littelfuse MIDI® 498 Series bolt-on fuses for battery and alternator protection in vehicles.
Industrial control panels — Littelfuse KLKD Series midget fuses for branch circuit protection in control transformers and relays.
Motor control centers — Littelfuse BLF Series fast-acting fuses for short-circuit protection of motor starters and contactors.

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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Cross-referenced by specification & description
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