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LITTELFUSE Fuse: Class RK5, FLSR Series, Time-Delay, 1.25 A, 600 V AC, 300 V DC - Time-Delay Cylindrical Fuses
LITTELFUSETime-Delay Cylindrical Fuses

LITTELFUSE Fuse: Class RK5, FLSR Series, Time-Delay, 1.25 A, 600 V AC, 300 V DC

The LITTELFUSE FLSR Series Class RK5 Time-Delay Cylindrical Fuse (MPN FLSR1.25) is a non-indicating, 1.25 A overcurrent protection device rated for 600 V AC and 300 V DC. 3G Electric interprets your demand for…

SKU 3G-OTH-25765

Also listed as: FLSR125 · FLSR1 25 · FLSR1-25

Brand
LITTELFUSE
Item
Fuse: Class RK5, FLSR Series, Time-Delay, 1.25 A, 600 V AC, 300 V DC
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
FLSR1.25
Series
FLSR
Type
FLSR Series, Time-Delay, 1.25 A, Non-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 FLSR Series Class RK5 Time-Delay Cylindrical Fuse (MPN FLSR1.25) is a non-indicating, 1.25 A overcurrent protection device rated for 600 V AC and 300 V DC. 3G Electric interprets your demand for industrial electrical components and sources this specific fuse, backed by our specialist expertise in controls and electrical distribution across 14 industrial departments.

Frequently Asked Questions

What is the Littelfuse FLSR1.25 fuse used for?

The Littelfuse FLSR1.25 is a Class RK5 time-delay cylindrical fuse rated 1.25 A, 600 V AC / 300 V DC. It protects motor circuits, transformers, and other inductive loads from overcurrent and short circuits in industrial control panels, HVAC equipment, and power distribution systems.

What are the specifications of the Littelfuse FLSR1.25 fuse?

The Littelfuse FLSR1.25 is a Class RK5, time-delay, non-indicating fuse rated 1.25 A, 600 V AC and 300 V DC. It belongs to the FLSR series and is designed for branch-circuit protection with high inrush tolerance. The manufacturer part number is FLSR1.25.

Where to buy the Littelfuse FLSR1.25 fuse worldwide?

3G Electric supplies the Littelfuse FLSR1.25 fuse worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this Class RK5 time-delay fuse.

How to select the correct Littelfuse FLSR series fuse for a motor circuit?

To select the correct Littelfuse FLSR series fuse, match the voltage rating (600 V AC / 300 V DC) and current rating (1.25 A) to your circuit. The time-delay characteristic handles motor inrush without nuisance opening. Always verify the interrupting rating and ambient temperature derating per NEC guidelines.

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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Compatible alternatives & equivalents

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