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LITTELFUSE Fuse: Class RK5, FLSR Series, Time-Delay, 125 A, 600 V AC, 300 V DC - Time-Delay Blade Fuses
LITTELFUSETime-Delay Blade Fuses

LITTELFUSE Fuse: Class RK5, FLSR Series, Time-Delay, 125 A, 600 V AC, 300 V DC

The LITTELFUSE FLSR125 is a Class RK5, time-delay blade fuse rated at 125 A, 600 V AC and 300 V DC. Part of the FLSR Series, this non-indicating fuse is designed for overcurrent protection in industrial circuits. 3G…

SKU 3G-OTH-27345

Brand
LITTELFUSE
Item
Fuse: Class RK5, FLSR Series, Time-Delay, 125 A, 600 V AC, 300 V DC
Category
Time-Delay Blade Fuses
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Technical Specifications

LITTELFUSE
Manufacturer Part Number
FLSR125
Series
FLSR
Type
FLSR Series, Time-Delay, 125 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 FLSR125 is a Class RK5, time-delay blade fuse rated at 125 A, 600 V AC and 300 V DC. Part of the FLSR Series, this non-indicating fuse is designed for overcurrent protection in industrial circuits. 3G Electric interprets your demand and sources this genuine component across 14 industrial departments — with specialist depth in electrical controls to support your application.

Frequently Asked Questions

What is the LITTELFUSE FLSR125 fuse used for?

The LITTELFUSE FLSR125 is a Class RK5 time-delay fuse rated 125 A, 600 V AC, 300 V DC. It protects motors, transformers, and other inductive loads from short circuits and overloads in industrial control panels, HVAC equipment, and distribution systems.

What are the specifications of the LITTELFUSE FLSR125 fuse?

The LITTELFUSE FLSR125 is a Class RK5, time-delay, non-indicating fuse rated 125 A, 600 V AC, 300 V DC. It belongs to the FLSR series and is designed for high inrush applications. The manufacturer part number is FLSR125.

Where to buy the LITTELFUSE FLSR125 fuse worldwide?

3G Electric supplies the LITTELFUSE FLSR125 fuse worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this Class RK5 time-delay fuse.

How to select the correct LITTELFUSE FLSR125 fuse for an application?

Select the LITTELFUSE FLSR125 fuse based on continuous current (125 A), system voltage (600 V AC or 300 V DC), and inrush characteristics. The time-delay feature handles motor starting surges. Verify the Class RK5 rejection feature fits your fuse holder. Consult a qualified engineer for coordination studies.

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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