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LITTELFUSE FLNR300 Time-Delay Blade Fuse - Time-Delay Blade Fuses
LITTELFUSETime-Delay Blade Fuses

LITTELFUSE FLNR300 Time-Delay Blade Fuse

The LITTELFUSE FLNR300 is a Class RK5, time-delay blade fuse rated at 300 A, 250 V AC and 125 V DC. Part of the FLNR Series, this non-indicating fuse is designed for overcurrent protection in industrial power…

SKU 3G-OTH-27427

Also listed as: FLNR 300 · FLNR-300

Brand
LITTELFUSE
Item
FLNR300 Time-Delay Blade Fuse
Part Number
FLNR300
Category
Time-Delay Blade Fuses
Available to Order
Also known as:FLNR300LITTELFUSE
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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
FLNR300
Series
FLNR
Type
FLNR Series, Time-Delay, 300 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 FLNR300 is a Class RK5, time-delay blade fuse rated at 300 A, 250 V AC and 125 V DC. Part of the FLNR Series, this non-indicating fuse is designed for overcurrent protection in industrial power distribution systems.

Frequently Asked Questions

What is the LITTELFUSE FLNR300 fuse used for?

The LITTELFUSE FLNR300 is a Class RK5 time-delay fuse rated 300 A, 250 V AC, 125 V DC. It protects industrial motor circuits, transformers, and other equipment with high inrush currents, providing reliable overcurrent protection across machining, HVAC, and power transmission applications.

What are the specifications of the LITTELFUSE FLNR300 fuse?

The LITTELFUSE FLNR300 is a Class RK5, FLNR Series, time-delay fuse rated 300 A at 250 V AC and 125 V DC. It is non-indicating, with a blade-type design. The manufacturer part number is FLNR300, and it is part of the FLNR series.

Where to buy the LITTELFUSE FLNR300 fuse worldwide?

3G Electric supplies the LITTELFUSE FLNR300 fuse worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this Class RK5 time-delay fuse.

How to select the correct LITTELFUSE FLNR300 fuse for a motor circuit?

To select the LITTELFUSE FLNR300, match the fuse's 300 A rating and 250 V AC/125 V DC voltage to your motor's full-load current and system voltage. The time-delay feature handles startup inrush. Always consult the motor nameplate and follow NEC guidelines for Class RK5 fuse sizing.

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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