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LITTELFUSE Fuse: Class RK5, FLSR Series, Time-Delay, 4.5 A, 600 V AC, 300 V DC - Time-Delay Cylindrical Fuses
LITTELFUSETime-Delay Cylindrical Fuses

LITTELFUSE Fuse: Class RK5, FLSR Series, Time-Delay, 4.5 A, 600 V AC, 300 V DC

The LITTELFUSE FLSR Series FLSR04.5 is a Class RK5, time-delay cylindrical fuse rated at 4.5 A, 600 V AC and 300 V DC. This non-indicating fuse is designed for overcurrent protection in industrial electrical systems.

SKU 3G-OTH-26747

Also listed as: FLSR045 · FLSR04 5 · FLSR04-5

Brand
LITTELFUSE
Item
Fuse: Class RK5, FLSR Series, Time-Delay, 4.5 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
FLSR04.5
Series
FLSR
Type
FLSR Series, Time-Delay, 4.5 A, Non-Indicating
AC
600 V
DC
300 V

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

Product Description

The LITTELFUSE FLSR Series FLSR04.5 is a Class RK5, time-delay cylindrical fuse rated at 4.5 A, 600 V AC and 300 V DC. This non-indicating fuse is designed for overcurrent protection in industrial electrical systems.

Frequently Asked Questions

What is a Littelfuse FLSR04.5 fuse used for?

The Littelfuse FLSR04.5 is a Class RK5 time-delay fuse rated 4.5 A, 600 V AC / 300 V DC. It protects motor circuits, transformers, and control panels from overloads and short circuits. Its non-indicating design suits industrial applications where fuse status is checked by testing rather than visual inspection.

What are the specifications of the Littelfuse FLSR04.5 fuse?

The Littelfuse FLSR04.5 is a Class RK5, time-delay, non-indicating cylindrical fuse. It is rated 4.5 A, 600 V AC, 300 V DC, and belongs to the FLSR series. The manufacturer part number is FLSR04.5. It is designed for branch-circuit protection in industrial equipment.

Where to buy Littelfuse FLSR04.5 fuses worldwide?

3G Electric supplies the Littelfuse FLSR04.5 fuse worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this Class RK5 time-delay fuse.

How to select the right Littelfuse FLSR series fuse for a motor circuit?

To select a Littelfuse FLSR series fuse, match the voltage rating (600 V AC / 300 V DC) and current rating (e.g., 4.5 A) to your circuit. Time-delay fuses handle inrush currents from motors. Verify the interrupting rating meets system fault current. Consult a qualified engineer for proper coordination.

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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