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LITTELFUSE IDSR Series Time-Delay Indicating Fuse - Time-Delay Cylindrical Fuses
LITTELFUSETime-Delay Cylindrical Fuses

LITTELFUSE IDSR Series Time-Delay Indicating Fuse

The LITTELFUSE IDSR6.25 is a Class RK5, time-delay cylindrical fuse from the IDSR Series, rated at 6.25 A with 600 V AC and 600 V DC capability. It features indicating functionality for visual status identification…

SKU 3G-OTH-26003

Also listed as: IDSR625 · IDSR6 25 · IDSR6-25

Brand
LITTELFUSE
Item
IDSR Series Time-Delay Indicating Fuse
Category
Time-Delay Cylindrical 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
IDSR6.25
Series
IDSR
Type
IDSR Series, Time-Delay, 6.25 A, Indicating
AC
600 V
DC
600 V

Technical Documents

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

Product Description

The LITTELFUSE IDSR6.25 is a Class RK5, time-delay cylindrical fuse from the IDSR Series, rated at 6.25 A with 600 V AC and 600 V DC capability. It features indicating functionality for visual status identification. 3G Electric interprets your demand for industrial electrical protection and sources this genuine LITTELFUSE component across our 14 departments, with specialist expertise in controls to support your application.

Frequently Asked Questions

What is the LITTELFUSE IDSR6.25 fuse used for?

The LITTELFUSE IDSR6.25 is a Class RK5, time-delay fuse rated 6.25 A at 600 V AC/DC. It is used for motor and transformer protection in industrial power distribution, where its indicating feature allows quick identification of a blown fuse, reducing downtime.

What are the specifications of the LITTELFUSE IDSR6.25 fuse?

The LITTELFUSE IDSR6.25 is a Class RK5, time-delay, indicating fuse rated 6.25 A, 600 V AC, and 600 V DC. It belongs to the IDSR series and is designed for overcurrent protection in industrial circuits. The manufacturer part number is IDSR6.25.

Where to buy the LITTELFUSE IDSR6.25 fuse worldwide?

You can source the LITTELFUSE IDSR6.25 fuse worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct LITTELFUSE IDSR series fuse for an application?

To select the correct LITTELFUSE IDSR series fuse, match the voltage rating (600 V AC/DC) and current rating (e.g., 6.25 A) to your circuit requirements. The time-delay characteristic handles inrush currents from motors or transformers. Always consult the manufacturer's data sheet for 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.
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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
Class RK5 time-delay fuse rated 7 A at 600 V AC and 600 V DC. Features an indicating function for blown-fuse detection. Suitable for overcurrent and short-circuit protection of motors, transformers, and inductive loads in industrial control panels and power distribution systems
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Class RK5 time-delay fuse rated 7 A at 600 V AC and 600 V DC. Features an indicating function for blown-fuse detection. Suitable for overcurrent and short-circuit protection of motors, transformers, and inductive loads in industrial control panels and power distribution systems
Class RK5 time-delay cylindrical fuse rated 5 A at 600 V AC and 600 V DC. Features an indicating window for visual blown-fuse detection. Suitable for branch-circuit protection of motors, transformers, and control circuits where inrush currents are present
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Class RK5 time-delay cylindrical fuse rated 5 A at 600 V AC and 600 V DC. Features an indicating window for visual blown-fuse detection. Suitable for branch-circuit protection of motors, transformers, and control circuits where inrush currents are present
The LITTELFUSE IDSR040 is a 40 A, Class RK5 time-delay cylindrical fuse rated for 600 V AC and 600 V DC. It features an indicating function for visual identification of an open circuit. This fuse is used in industrial applications to protect motors, transformers, and other equipment from overcurrent and short circuits, while accommodating temporary inrush currents
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The LITTELFUSE IDSR040 is a 40 A, Class RK5 time-delay cylindrical fuse rated for 600 V AC and 600 V DC. It features an indicating function for visual identification of an open circuit. This fuse is used in industrial applications to protect motors, transformers, and other equipment from overcurrent and short circuits, while accommodating temporary inrush currents
Class RK5, time-delay cylindrical fuse rated 25 A at 600 V AC and 600 V DC. Features visual indication for blown fuse detection. Suitable for overcurrent protection in circuits with high inrush currents, such as motor and transformer applications
LITTELFUSE
Class RK5, time-delay cylindrical fuse rated 25 A at 600 V AC and 600 V DC. Features visual indication for blown fuse detection. Suitable for overcurrent protection in circuits with high inrush currents, such as motor and transformer applications
Class RK5 time-delay cylindrical fuse rated 35 A, 600 V AC and 600 V DC. Features visual indication for blown-fuse detection. Suitable for overload and short-circuit protection in industrial and commercial power distribution systems, including motors, transformers, and lighting circuits
LITTELFUSE
Class RK5 time-delay cylindrical fuse rated 35 A, 600 V AC and 600 V DC. Features visual indication for blown-fuse detection. Suitable for overload and short-circuit protection in industrial and commercial power distribution systems, including motors, transformers, and lighting circuits
Class RK5 time-delay fuse rated 6 A at 600 V AC and 600 V DC. Features visual indication for blown fuse status. Suitable for overcurrent protection in motor, transformer, and control circuits
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Class RK5 time-delay fuse rated 6 A at 600 V AC and 600 V DC. Features visual indication for blown fuse status. Suitable for overcurrent protection in motor, transformer, and control circuits

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The LITTELFUSE FLNR040 is a Class RK5, FLNR Series time-delay cylindrical fuse rated at 40 A, 250 V AC and 125 V DC, non-indicating. It provides overcurrent protection for motors, transformers, and lighting circuits, accommodating inrush currents without nuisance opening. Suitable for use in industrial and commercial power distribution systems
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The LITTELFUSE FLNR040 is a Class RK5, FLNR Series time-delay cylindrical fuse rated at 40 A, 250 V AC and 125 V DC, non-indicating. It provides overcurrent protection for motors, transformers, and lighting circuits, accommodating inrush currents without nuisance opening. Suitable for use in industrial and commercial power distribution systems
The LITTELFUSE FLSR010 is a Class RK5, time-delay cylindrical fuse rated at 10 A with 600 V AC and 300 V DC capacity. It is non-indicating and belongs to the FLSR series. This fuse is used for branch-circuit protection in industrial control panels, motor starters, and similar applications where time-delay characteristics accommodate inrush currents
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The LITTELFUSE FLSR010 is a Class RK5, time-delay cylindrical fuse rated at 10 A with 600 V AC and 300 V DC capacity. It is non-indicating and belongs to the FLSR series. This fuse is used for branch-circuit protection in industrial control panels, motor starters, and similar applications where time-delay characteristics accommodate inrush currents
Class RK5 time-delay cylindrical fuse rated 8 A, 600 V AC and 300 V DC. Features an indicating function that visually signals a blown fuse. Suitable for overload and short-circuit protection in motor circuits, transformers, and general industrial equipment
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Class RK5 time-delay cylindrical fuse rated 8 A, 600 V AC and 300 V DC. Features an indicating function that visually signals a blown fuse. Suitable for overload and short-circuit protection in motor circuits, transformers, and general industrial equipment
The LITTELFUSE FLNR012 is a Class RK5, FLNR Series time-delay cylindrical fuse rated 12 A at 250 V AC and 125 V DC. It is non-indicating and designed for branch-circuit protection in equipment with high inrush currents, such as motors, transformers, and lighting circuits. The time-delay characteristic prevents nuisance opening during startup
LITTELFUSE
The LITTELFUSE FLNR012 is a Class RK5, FLNR Series time-delay cylindrical fuse rated 12 A at 250 V AC and 125 V DC. It is non-indicating and designed for branch-circuit protection in equipment with high inrush currents, such as motors, transformers, and lighting circuits. The time-delay characteristic prevents nuisance opening during startup
Class RK5, time-delay cylindrical fuse rated 45 A, 600 V AC and 300 V DC. Features a blown-fuse indicator for visual identification. Provides overcurrent protection for motor circuits, transformers, and other inductive loads where temporary inrush currents occur
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Class RK5, time-delay cylindrical fuse rated 45 A, 600 V AC and 300 V DC. Features a blown-fuse indicator for visual identification. Provides overcurrent protection for motor circuits, transformers, and other inductive loads where temporary inrush currents occur
Midget time-delay cylindrical fuse rated 10 A, 500 V AC, and 300 V DC. Measures 13/32 in x 1 1/2 in. Provides overcurrent protection in circuits with temporary inrush currents, such as motor controls, transformers, and solenoids
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Midget time-delay cylindrical fuse rated 10 A, 500 V AC, and 300 V DC. Measures 13/32 in x 1 1/2 in. Provides overcurrent protection in circuits with temporary inrush currents, such as motor controls, transformers, and solenoids
Class RK5 time-delay cylindrical fuse rated 60 A, 600 V AC and 300 V DC. Features visual blown-fuse indication for faster troubleshooting. Accommodates temporary inrush currents typical of motor circuits, transformers, and other inductive loads in industrial control panels
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Class RK5 time-delay cylindrical fuse rated 60 A, 600 V AC and 300 V DC. Features visual blown-fuse indication for faster troubleshooting. Accommodates temporary inrush currents typical of motor circuits, transformers, and other inductive loads in industrial control panels
Time-delay midget fuse rated 600 mA, 500 V AC, 300 V DC. Measures 13/32 in x 1 1/2 in. Provides overcurrent protection for motor circuits, control transformers, and inductive loads requiring delayed blow characteristics
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Time-delay midget fuse rated 600 mA, 500 V AC, 300 V DC. Measures 13/32 in x 1 1/2 in. Provides overcurrent protection for motor circuits, control transformers, and inductive loads requiring delayed blow characteristics