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

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

The LITTELFUSE IDSR125 is a Class RK5, time-delay blade fuse from the IDSR Series, rated at 125 A with 600 V AC and 600 V DC capability. It features an indicating function for visual blown-fuse detection. 3G Electric…

SKU 3G-OTH-28342

Also listed as: IDSR 125 · IDSR-125

Brand
LITTELFUSE
Item
Fuse: Class RK5, IDSR Series, Time-Delay, 125 A, 600 V AC, 600 V DC
Category
Time-Delay Blade 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
IDSR125
Series
IDSR
Type
IDSR Series, Time-Delay, 125 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 IDSR125 is a Class RK5, time-delay blade fuse from the IDSR Series, rated at 125 A with 600 V AC and 600 V DC capability. It features an indicating function for visual blown-fuse detection. 3G Electric interprets your demand for industrial electrical protection, sourcing this genuine LITTELFUSE component across our 14 departments, with specialist depth in controls to support your application.

Frequently Asked Questions

What is the LITTELFUSE IDSR125 fuse used for?

The LITTELFUSE IDSR125 is a Class RK5 time-delay fuse rated 125 A, 600 V AC/DC, with an indicating feature. It protects motors, transformers, and other inductive loads from overcurrent and short circuits in industrial power distribution systems.

What are the specifications of the LITTELFUSE IDSR125 fuse?

The IDSR125 is a Class RK5, time-delay fuse from LITTELFUSE. It is rated 125 A, 600 V AC and 600 V DC, with an indicating function. The series is IDSR, and the manufacturer part number is IDSR125.

Where to buy the LITTELFUSE IDSR125 fuse worldwide?

3G Electric supplies the LITTELFUSE IDSR125 fuse worldwide. As 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 IDSR125 fuse for an application?

Select the IDSR125 based on your circuit's voltage (600 V AC/DC max) and continuous current (125 A). Ensure the Class RK5 time-delay characteristic matches your motor or transformer starting current. Consult LITTELFUSE application notes 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.

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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