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LITTELFUSE Fuse: Class RK5, FLSR-ID Series, Time-Delay, 40 A, 600 V AC, 300 V DC - Time-Delay Cylindrical Fuses
LITTELFUSETime-Delay Cylindrical Fuses

LITTELFUSE Fuse: Class RK5, FLSR-ID Series, Time-Delay, 40 A, 600 V AC, 300 V DC

The LITTELFUSE FLSR-ID Series FLSR040ID is a Class RK5, time-delay cylindrical fuse rated at 40 A, 600 V AC and 300 V DC, with an indicating feature. This time-delay design accommodates inrush currents while…

SKU 3G-OTH-28137

Brand
LITTELFUSE
Item
Fuse: Class RK5, FLSR-ID Series, Time-Delay, 40 A, 600 V AC, 300 V DC
Category
Time-Delay Cylindrical Fuses
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Technical Specifications

LITTELFUSE
Manufacturer Part Number
FLSR040ID
Series
FLSR-ID
Type
FLSR-ID Series, Time-Delay, 40 A, Indicating
AC
600 V
DC
300 V
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LITTELFUSE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The LITTELFUSE FLSR-ID Series FLSR040ID is a Class RK5, time-delay cylindrical fuse rated at 40 A, 600 V AC and 300 V DC, with an indicating feature. This time-delay design accommodates inrush currents while protecting downstream equipment. 3G Electric interprets your demand and sources this genuine industrial fuse across 14 departments, with specialist depth in electrical controls to support your application.

Frequently Asked Questions

What is the LITTELFUSE FLSR040ID fuse used for?

The LITTELFUSE FLSR040ID is a Class RK5 time-delay indicating fuse rated 40 A, 600 V AC / 300 V DC. It protects motor circuits, transformers, and other inductive loads where temporary inrush currents occur. The built-in indicator shows when the fuse has opened, simplifying troubleshooting in industrial control panels and distribution equipment.

What are the specifications of the LITTELFUSE FLSR040ID?

The LITTELFUSE FLSR040ID is a Class RK5 time-delay indicating fuse from the FLSR-ID series. It is rated 40 A, 600 V AC, and 300 V DC. The manufacturer part number is FLSR040ID. Its time-delay characteristic allows it to withstand temporary overloads common in motor-starting applications.

Where to buy LITTELFUSE FLSR040ID worldwide?

3G Electric supplies the LITTELFUSE FLSR040ID fuse to customers worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver this Class RK5 time-delay indicating fuse to any country.

How to select the correct LITTELFUSE FLSR-ID series fuse?

To select the correct LITTELFUSE FLSR-ID series fuse, match the voltage rating (600 V AC / 300 V DC) and current rating (40 A for the FLSR040ID) to your circuit requirements. The time-delay feature is ideal for motor circuits. Always verify the Class RK5 rejection feature prevents substitution with lower-rated fuses.

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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