Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
LITTELFUSE FLSR17.5ID Class RK5 Time-Delay Indicating Fuse - Time-Delay Cylindrical Fuses
LITTELFUSETime-Delay Cylindrical Fuses

LITTELFUSE FLSR17.5ID Class RK5 Time-Delay Indicating Fuse

The LITTELFUSE FLSR-ID Series Class RK5 Time-Delay Cylindrical Fuse (MPN FLSR17.5ID) is a 17.5 A, indicating fuse rated for 600 V AC and 300 V DC. This time-delay fuse is designed for overcurrent protection in…

SKU 3G-OTH-28200

Also listed as: FLSR175ID · FLSR17 5ID · FLSR17-5ID

Brand
LITTELFUSE
Item
FLSR17.5ID Class RK5 Time-Delay Indicating Fuse
Category
Time-Delay Cylindrical Fuses
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
FLSR17.5ID
Series
FLSR-ID
Type
FLSR-ID Series, Time-Delay, 17.5 A, Indicating
AC
600 V
DC
300 V

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The LITTELFUSE FLSR-ID Series Class RK5 Time-Delay Cylindrical Fuse (MPN FLSR17.5ID) is a 17.5 A, indicating fuse rated for 600 V AC and 300 V DC. This time-delay fuse is designed for overcurrent protection in industrial electrical circuits, with the indicating feature providing visual identification of a blown fuse.

Frequently Asked Questions

What is the LITTELFUSE FLSR17.5ID fuse used for?

The LITTELFUSE FLSR17.5ID is a Class RK5 time-delay indicating fuse rated 17.5 A, 600 V AC / 300 V DC. It protects motor circuits, transformers, and general industrial equipment from overcurrent and short circuits, with visual indication for blown fuse identification.

What are the specifications of the LITTELFUSE FLSR17.5ID fuse?

The LITTELFUSE FLSR17.5ID is a Class RK5, FLSR-ID Series, time-delay indicating fuse. Key specs: 17.5 A, 600 V AC, 300 V DC. It provides overload and short-circuit protection with a visual indicator for blown fuse status.

Where to buy LITTELFUSE FLSR17.5ID fuse worldwide?

3G Electric supplies the LITTELFUSE FLSR17.5ID fuse to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for a quote and lead time on this Class RK5 time-delay indicating fuse.

How to select the correct LITTELFUSE FLSR17.5ID fuse for an application?

Select the LITTELFUSE FLSR17.5ID fuse based on system voltage (600 V AC max, 300 V DC max) and continuous current (17.5 A). Ensure the Class RK5 time-delay characteristic matches motor or transformer inrush. Verify interrupting rating meets available fault current.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

Cross-referenced by specification & description
Class RK5 time-delay cylindrical fuse from the FLSR-ID series, rated 2.25 A, 600 V AC and 300 V DC. Features an integral blown-fuse indicator for visual identification of an open circuit. Suitable for overcurrent and short-circuit protection in motor circuits, transformers, and general industrial equipment
LITTELFUSE
Class RK5 time-delay cylindrical fuse from the FLSR-ID series, rated 2.25 A, 600 V AC and 300 V DC. Features an integral blown-fuse indicator for visual identification of an open circuit. Suitable for overcurrent and short-circuit protection in motor circuits, transformers, and general industrial equipment
Class RK5 time-delay cylindrical fuse rated 40 A, 600 V AC and 300 V DC. The FLSR-ID series design accommodates inrush currents in motor circuits, transformers, and inductive loads. Built-in indicator shows when the fuse has opened, aiding troubleshooting in industrial control panels and distribution equipment
LITTELFUSE
Class RK5 time-delay cylindrical fuse rated 40 A, 600 V AC and 300 V DC. The FLSR-ID series design accommodates inrush currents in motor circuits, transformers, and inductive loads. Built-in indicator shows when the fuse has opened, aiding troubleshooting in industrial control panels and distribution equipment
Class RK5 time-delay cylindrical fuse rated 7.5 A, 600 V AC and 300 V DC. Features an indicating function for visual blown-fuse identification. Suitable for overcurrent protection of motor circuits, transformers, and other inductive loads in industrial control panels and distribution equipment
LITTELFUSE
Class RK5 time-delay cylindrical fuse rated 7.5 A, 600 V AC and 300 V DC. Features an indicating function for visual blown-fuse identification. Suitable for overcurrent protection of motor circuits, transformers, and other inductive loads in industrial control panels and distribution equipment
Class RK5 time-delay cylindrical fuse rated 3.5 A, 600 V AC, and 300 V DC. Features an indicating function for visual blown-fuse detection. Suitable for overload and short-circuit protection in motor circuits, transformers, lighting panels, and industrial control panels
LITTELFUSE
Class RK5 time-delay cylindrical fuse rated 3.5 A, 600 V AC, and 300 V DC. Features an indicating function for visual blown-fuse detection. Suitable for overload and short-circuit protection in motor circuits, transformers, lighting panels, and industrial control panels
Class RK5 time-delay cylindrical fuse rated 17.5 A, 600 V AC, 300 V DC. Non-indicating design. Suitable for overcurrent protection of motor circuits, transformers, and inductive loads, allowing harmless inrush currents without nuisance opening
LITTELFUSE
Class RK5 time-delay cylindrical fuse rated 17.5 A, 600 V AC, 300 V DC. Non-indicating design. Suitable for overcurrent protection of motor circuits, transformers, and inductive loads, allowing harmless inrush currents without nuisance opening
Class RK5 time-delay cylindrical fuse rated 7 A at 600 V AC and 300 V DC. Features an indicator that visually signals when the fuse has opened. Designed for overload and short-circuit protection in motor circuits, transformers, and general industrial equipment
LITTELFUSE
Class RK5 time-delay cylindrical fuse rated 7 A at 600 V AC and 300 V DC. Features an indicator that visually signals when the fuse has opened. Designed for overload and short-circuit protection in motor circuits, transformers, and general industrial equipment

More from LITTELFUSE

View all LITTELFUSE parts →
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
LITTELFUSE
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
LITTELFUSE
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
LITTELFUSE
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
LITTELFUSE
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
LITTELFUSE
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
LITTELFUSE
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
LITTELFUSE
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