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LITTELFUSE FLSR125ID Time-Delay Blade Fuse - Time-Delay Blade Fuses
LITTELFUSETime-Delay Blade Fuses

LITTELFUSE FLSR125ID Time-Delay Blade Fuse

The LITTELFUSE FLSR125ID is a Class RK5, time-delay blade fuse from the FLSR-ID Series, rated 125 A at 600 V AC and 300 V DC with an indicating feature. 3G Electric interprets your demand for industrial electrical…

SKU 3G-OTH-28195

Brand
LITTELFUSE
Item
FLSR125ID Time-Delay Blade Fuse
Category
Time-Delay Blade Fuses
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

LITTELFUSE
Manufacturer Part Number
FLSR125ID
Series
FLSR-ID
Type
FLSR-ID Series, Time-Delay, 125 A, 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 FLSR125ID is a Class RK5, time-delay blade fuse from the FLSR-ID Series, rated 125 A at 600 V AC and 300 V DC with an indicating feature. 3G Electric interprets your demand for industrial electrical protection, sourcing this specific OEM fuse across 14 departments — and far more — while our specialist depth in controls ensures the right solution for your application.

Frequently Asked Questions

What is the LITTELFUSE FLSR125ID fuse used for?

The LITTELFUSE FLSR125ID is a Class RK5 time-delay indicating fuse rated 125 A, 600 V AC, 300 V DC. It protects industrial motor circuits, transformers, and branch circuits where high inrush currents occur. The built-in indicator visually signals a blown fuse, reducing troubleshooting time in panel maintenance.

What are the specifications of the LITTELFUSE FLSR125ID fuse?

The LITTELFUSE FLSR125ID is a Class RK5, FLSR-ID Series, time-delay, indicating fuse. Its ratings are 125 A, 600 V AC, 300 V DC. The manufacturer part number is FLSR125ID. It features a blade-type body for bolted connections and a visual trip indicator for quick identification of an open circuit.

Where to buy LITTELFUSE FLSR125ID fuses worldwide?

3G Electric supplies the LITTELFUSE FLSR125ID 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. We source genuine LITTELFUSE components for industrial maintenance and OEM applications.

How to select the correct LITTELFUSE FLSR125ID fuse for a circuit?

To select the LITTELFUSE FLSR125ID, verify your circuit voltage does not exceed 600 V AC or 300 V DC, and the continuous load current is below 125 A. The time-delay characteristic handles motor start-up surges. Ensure the fuse holder or disconnect switch accepts Class RK5 blade-type fuses. Consult a licensed electrician for code compliance.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
LITTELFUSE Fuse: Class RK5, FLSR-ID Series, Time-Delay, 225 A, 600 V AC, 300 V DC, Indicating (MPN FLSR225ID)
LITTELFUSE
LITTELFUSE Fuse: Class RK5, FLSR-ID Series, Time-Delay, 225 A, 600 V AC, 300 V DC, Indicating (MPN FLSR225ID)
LITTELFUSE Fuse: Class RK5, FLSR-ID Series, Time-Delay, 150 A, 600 V AC, 300 V DC, Indicating (MPN FLSR150ID)
LITTELFUSE
LITTELFUSE Fuse: Class RK5, FLSR-ID Series, Time-Delay, 150 A, 600 V AC, 300 V DC, Indicating (MPN FLSR150ID)
LITTELFUSE Fuse: Class RK5, FLSR-ID Series, Time-Delay, 450 A, 600 V AC, 300 V DC, Indicating (MPN FLSR450ID)
LITTELFUSE
LITTELFUSE Fuse: Class RK5, FLSR-ID Series, Time-Delay, 450 A, 600 V AC, 300 V DC, Indicating (MPN FLSR450ID)
LITTELFUSE Fuse: Class RK5, FLSR-ID Series, Time-Delay, 600 A, 600 V AC, 300 V DC, Indicating (MPN FLSR600ID)
LITTELFUSE
LITTELFUSE Fuse: Class RK5, FLSR-ID Series, Time-Delay, 600 A, 600 V AC, 300 V DC, Indicating (MPN FLSR600ID)
Class RK5 time-delay blade fuse rated 175 A, 600 V AC and 300 V DC. Features an indicating function that provides a visual signal when the fuse opens. Suitable for branch-circuit protection of motors, transformers, and other inductive loads in industrial control panels and distribution equipment
LITTELFUSE
Class RK5 time-delay blade fuse rated 175 A, 600 V AC and 300 V DC. Features an indicating function that provides a visual signal when the fuse opens. Suitable for branch-circuit protection of motors, transformers, and other inductive loads in industrial control panels and distribution equipment
Class RK5 time-delay blade fuse rated 350 A, 600 V AC and 300 V DC. Features an indicating function that provides visual confirmation when the fuse has opened. Suitable for overcurrent protection in industrial circuits such as motor starters, transformers, and switchgear
LITTELFUSE
Class RK5 time-delay blade fuse rated 350 A, 600 V AC and 300 V DC. Features an indicating function that provides visual confirmation when the fuse has opened. Suitable for overcurrent protection in industrial circuits such as motor starters, transformers, and switchgear

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The LITTELFUSE FLNR450 is a Class RK5 time-delay blade fuse rated at 450 A, 250 V AC, and 125 V DC. Part of the FLNR Series, this non-indicating fuse provides overcurrent protection for industrial circuits, motors, and transformers where high inrush currents occur
LITTELFUSE
The LITTELFUSE FLNR450 is a Class RK5 time-delay blade fuse rated at 450 A, 250 V AC, and 125 V DC. Part of the FLNR Series, this non-indicating fuse provides overcurrent protection for industrial circuits, motors, and transformers where high inrush currents occur
The LITTELFUSE FLNR400 is a Class RK5, time-delay blade fuse rated at 400 A, 250 V AC and 125 V DC. It is part of the FLNR Series and is non-indicating. This fuse provides overcurrent protection for industrial motor circuits, feeders, and branch circuits, with time-delay characteristics to accommodate inrush currents
LITTELFUSE
The LITTELFUSE FLNR400 is a Class RK5, time-delay blade fuse rated at 400 A, 250 V AC and 125 V DC. It is part of the FLNR Series and is non-indicating. This fuse provides overcurrent protection for industrial motor circuits, feeders, and branch circuits, with time-delay characteristics to accommodate inrush currents
The LITTELFUSE FLNR150 is a Class RK5, time-delay blade fuse rated 150 A, 250 V AC and 125 V DC. It is non-indicating and part of the FLNR Series. Designed for overcurrent protection, its time-delay characteristic accommodates inrush currents from motors and transformers, making it suitable for industrial motor circuits, feeders, and branch circuits
LITTELFUSE
The LITTELFUSE FLNR150 is a Class RK5, time-delay blade fuse rated 150 A, 250 V AC and 125 V DC. It is non-indicating and part of the FLNR Series. Designed for overcurrent protection, its time-delay characteristic accommodates inrush currents from motors and transformers, making it suitable for industrial motor circuits, feeders, and branch circuits
Class RK5 time-delay blade fuse rated 110 A, 600 V AC and 600 V DC. Features an indicating function for blown-fuse detection. Suitable for motor and transformer protection in industrial power distribution systems
LITTELFUSE
Class RK5 time-delay blade fuse rated 110 A, 600 V AC and 600 V DC. Features an indicating function for blown-fuse detection. Suitable for motor and transformer protection in industrial power distribution systems
Class RK5 time-delay blade fuse rated 350 A at 250 V AC or 125 V DC. Non-indicating design. Provides overcurrent protection for industrial motor circuits, transformers, and equipment with high inrush currents
LITTELFUSE
Class RK5 time-delay blade fuse rated 350 A at 250 V AC or 125 V DC. Non-indicating design. Provides overcurrent protection for industrial motor circuits, transformers, and equipment with high inrush currents
The LITTELFUSE FLSR600 is a Class RK5, time-delay blade fuse rated 600 A at 600 V AC and 300 V DC. It is part of the FLSR Series and is non-indicating. This fuse provides overcurrent protection for industrial circuits, such as motor and transformer protection in power distribution systems, where its time-delay characteristic accommodates inrush currents
LITTELFUSE
The LITTELFUSE FLSR600 is a Class RK5, time-delay blade fuse rated 600 A at 600 V AC and 300 V DC. It is part of the FLSR Series and is non-indicating. This fuse provides overcurrent protection for industrial circuits, such as motor and transformer protection in power distribution systems, where its time-delay characteristic accommodates inrush currents
Class RK5 time-delay blade fuse rated 175 A at 600 V AC and 600 V DC. Features an indicating function for visual identification of a blown fuse. Suitable for overcurrent protection in industrial circuits, including motor and transformer applications
LITTELFUSE
Class RK5 time-delay blade fuse rated 175 A at 600 V AC and 600 V DC. Features an indicating function for visual identification of a blown fuse. Suitable for overcurrent protection in industrial circuits, including motor and transformer applications
The LITTELFUSE FLSR400 is a Class RK5 time-delay blade fuse rated at 400 A, 600 V AC, and 300 V DC. Part of the FLSR Series, this non-indicating fuse provides overcurrent protection for circuits with inductive loads such as motors and transformers in industrial power distribution systems
LITTELFUSE
The LITTELFUSE FLSR400 is a Class RK5 time-delay blade fuse rated at 400 A, 600 V AC, and 300 V DC. Part of the FLSR Series, this non-indicating fuse provides overcurrent protection for circuits with inductive loads such as motors and transformers in industrial power distribution systems