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LITTELFUSE FLNR500 Class RK5 Time-Delay Blade Fuse - Time-Delay Blade Fuses
LITTELFUSETime-Delay Blade Fuses

LITTELFUSE FLNR500 Class RK5 Time-Delay Blade Fuse

The LITTELFUSE FLNR500 is a Class RK5, time-delay blade fuse from the FLNR Series, rated at 500 A with 250 V AC and 125 V DC capacity. This non-indicating fuse is designed for overcurrent protection in industrial…

SKU 3G-OTH-27288

Also listed as: FLNR 500 · FLNR-500

Brand
LITTELFUSE
Item
FLNR500 Class RK5 Time-Delay Blade Fuse
Part Number
FLNR500
Category
Time-Delay Blade Fuses
Available to Order
Also known as:FLNR500LITTELFUSE
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Technical Specifications

LITTELFUSE
Manufacturer Part Number
FLNR500
Series
FLNR
Type
FLNR Series, Time-Delay, 500 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 FLNR500 is a Class RK5, time-delay blade fuse from the FLNR Series, rated at 500 A with 250 V AC and 125 V DC capacity. This non-indicating fuse is designed for overcurrent protection in industrial electrical systems, supporting time-delay operation to handle temporary inrush currents without nuisance tripping.

Frequently Asked Questions

What is the LITTELFUSE FLNR500 fuse used for?

The LITTELFUSE FLNR500 is a Class RK5 time-delay fuse rated 500 A at 250 V AC or 125 V DC. It protects industrial motor circuits, feeders, and branch circuits against overloads and short circuits, especially where high inrush currents occur.

What are the specifications of the LITTELFUSE FLNR500 fuse?

The FLNR500 is a 500 A, 250 V AC / 125 V DC, Class RK5 time-delay fuse from the FLNR Series. It is non-indicating and designed for heavy-duty industrial overcurrent protection. The manufacturer part number is FLNR500.

Where to buy LITTELFUSE FLNR500 fuses worldwide?

3G Electric supplies the LITTELFUSE FLNR500 fuse to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this Class RK5 time-delay fuse.

How to select the correct LITTELFUSE FLNR500 fuse for an application?

Select the FLNR500 based on your circuit's continuous current (500 A max), voltage rating (250 V AC or 125 V DC), and available fault current. As a Class RK5 time-delay fuse, it tolerates temporary motor-starting surges. Verify coordination with upstream and downstream 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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