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LITTELFUSE Fuse: Class RK5, FLSR Series, Time-Delay, 3 A, 600 V AC, 300 V DC - Time-Delay Cylindrical Fuses
LITTELFUSETime-Delay Cylindrical Fuses

LITTELFUSE Fuse: Class RK5, FLSR Series, Time-Delay, 3 A, 600 V AC, 300 V DC

The LITTELFUSE FLSR003 is a Class RK5, time-delay cylindrical fuse rated at 3 A, 600 V AC and 300 V DC. As part of the FLSR Series, it is non-indicating and designed for overcurrent protection in industrial circuits…

SKU 3G-OTH-26553

Also listed as: FLSR 003 · FLSR-003

Brand
LITTELFUSE
Item
Fuse: Class RK5, FLSR Series, Time-Delay, 3 A, 600 V AC, 300 V DC
Category
Time-Delay Cylindrical Fuses
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

LITTELFUSE
Manufacturer Part Number
FLSR003
Series
FLSR
Type
FLSR Series, Time-Delay, 3 A, Non-Indicating
AC
600 V
DC
300 V

Technical Documents

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

Product Description

The LITTELFUSE FLSR003 is a Class RK5, time-delay cylindrical fuse rated at 3 A, 600 V AC and 300 V DC. As part of the FLSR Series, it is non-indicating and designed for overcurrent protection in industrial circuits. 3G Electric interprets your demand for genuine electrical components and delivers this fuse alongside solutions across 14 industrial departments, with specialist depth in controls to support your system's protection needs.

Frequently Asked Questions

What is the LITTELFUSE FLSR003 fuse used for?

The LITTELFUSE FLSR003 is a Class RK5 time-delay fuse rated 3 A, 600 V AC / 300 V DC. It protects motors, transformers, and other inductive loads from overcurrent and short circuits in industrial control panels, HVAC equipment, and power distribution systems.

What are the specifications of the LITTELFUSE FLSR003?

The LITTELFUSE FLSR003 is a non-indicating, time-delay cylindrical fuse from the FLSR Series. It is rated 3 A, 600 V AC, 300 V DC, and is classified as Class RK5. The manufacturer part number is FLSR003.

Where to buy LITTELFUSE FLSR003 worldwide?

3G Electric supplies the LITTELFUSE FLSR003 fuse worldwide. As a global industrial distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to select the right LITTELFUSE FLSR series fuse?

Select the LITTELFUSE FLSR series fuse based on system voltage (600 V AC or 300 V DC), continuous current (3 A for FLSR003), and the time-delay characteristic needed for motor-starting applications. Always verify the interrupting rating matches your fault current.

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 cylindrical fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
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