We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
Image not available
LITTELFUSETime-Delay Cylindrical Fuses

LITTELFUSE FLNR020 Time-Delay Cylindrical Fuse

The LITTELFUSE FLNR Series FLNR020 is a Class RK5, time-delay cylindrical fuse rated for 20 A at 250 V AC and 125 V DC, with a non-indicating design. This component supports overcurrent protection in industrial…

SKU 3G-OTH-25811

Also listed as: FLNR 020 · FLNR-020

Brand
LITTELFUSE
Item
FLNR020 Time-Delay Cylindrical Fuse
Part Number
FLNR020
Category
Time-Delay Cylindrical Fuses
Available to Order
Also known as:FLNR020LITTELFUSE
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

Delivery
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
FLNR020
Series
FLNR
Type
FLNR Series, Time-Delay, 20 A, Non-Indicating
AC
250 V
DC
125 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 FLNR Series FLNR020 is a Class RK5, time-delay cylindrical fuse rated for 20 A at 250 V AC and 125 V DC, with a non-indicating design. This component supports overcurrent protection in industrial electrical systems, sourced and quoted by 3G Electric across 14 departments, with specialist depth in controls and electrical distribution.

Frequently Asked Questions

What is the LITTELFUSE FLNR020 fuse used for?

The LITTELFUSE FLNR020 is a Class RK5, time-delay fuse rated 20 A, 250 V AC, 125 V DC. It protects motors, transformers, and other inductive loads from overcurrent and short circuits. Its time-delay characteristic allows harmless inrush currents without nuisance opening, making it suitable for industrial control panels and HVAC equipment.

What are the specifications of the LITTELFUSE FLNR020 fuse?

The LITTELFUSE FLNR020 is a Class RK5, time-delay, non-indicating cylindrical fuse. It is rated 20 A, 250 V AC, 125 V DC, and belongs to the FLNR Series. The manufacturer part number is FLNR020. It provides overcurrent protection for circuits with high inrush currents, such as motor starters and transformers.

Where to buy LITTELFUSE FLNR020 fuses worldwide?

You can source the LITTELFUSE FLNR020 fuse through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time. 3G Electric supplies genuine LITTELFUSE components for industrial applications.

How to select the correct LITTELFUSE FLNR020 fuse for an application?

To select the LITTELFUSE FLNR020, verify your circuit voltage does not exceed 250 V AC or 125 V DC, and the continuous load current is below 20 A. Ensure the Class RK5 rejection base matches the fuse dimensions. For motor protection, confirm the time-delay characteristic accommodates starting current. Consult a qualified engineer for branch-circuit 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.
Not sure this is the right part? Photo-identify it

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

More from LITTELFUSE

View all LITTELFUSE parts
The LITTELFUSE FLSR.250T is a Class RK5, time-delay cylindrical fuse rated at 250 mA, 600 V AC, and 300 V DC. Part of the FLSR Series, this non-indicating fuse provides overcurrent protection for circuits containing inductive loads such as motors and transformers, allowing harmless inrush currents to pass without nuisance opening
LITTELFUSE
The LITTELFUSE FLSR.250T is a Class RK5, time-delay cylindrical fuse rated at 250 mA, 600 V AC, and 300 V DC. Part of the FLSR Series, this non-indicating fuse provides overcurrent protection for circuits containing inductive loads such as motors and transformers, allowing harmless inrush currents to pass without nuisance opening
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
Time-delay cylindrical fuse from the FLM Series, rated 25 A at 250 V AC. Midget size (13/32 in x 1 1/2 in), non-indicating. Provides overcurrent protection with tolerance for temporary inrush currents, suited for motors, transformers, and control circuits
LITTELFUSE
Time-delay cylindrical fuse from the FLM Series, rated 25 A at 250 V AC. Midget size (13/32 in x 1 1/2 in), non-indicating. Provides overcurrent protection with tolerance for temporary inrush currents, suited for motors, transformers, and control circuits
Class RK5 time-delay cylindrical fuse rated 300 mA at 600 V AC or 300 V DC. Non-indicating type from the FLSR series. Used for overcurrent protection in motor circuits, transformers, and other inductive loads where harmless inrush currents must pass without nuisance opening
LITTELFUSE
Class RK5 time-delay cylindrical fuse rated 300 mA at 600 V AC or 300 V DC. Non-indicating type from the FLSR series. Used for overcurrent protection in motor circuits, transformers, and other inductive loads where harmless inrush currents must pass without nuisance opening
Class RK5 time-delay cylindrical fuse rated 1 A, 600 V AC and 300 V DC. Non-indicating type from the FLSR Series. Provides overcurrent protection for branch circuits supplying inductive loads such as motors and transformers, accommodating inrush currents without nuisance opening
LITTELFUSE
Class RK5 time-delay cylindrical fuse rated 1 A, 600 V AC and 300 V DC. Non-indicating type from the FLSR Series. Provides overcurrent protection for branch circuits supplying inductive loads such as motors and transformers, accommodating inrush currents without nuisance opening
Class RK5, time-delay cylindrical fuse from the FLNR Series. Rated 30 A at 250 V AC and 125 V DC. Non-indicating design. Suitable for branch-circuit protection of motors, transformers, and other inductive loads in industrial control panels and distribution equipment
LITTELFUSE
Class RK5, time-delay cylindrical fuse from the FLNR Series. Rated 30 A at 250 V AC and 125 V DC. Non-indicating design. Suitable for branch-circuit protection of motors, transformers, and other inductive loads in industrial control panels and distribution equipment
Class RK5 time-delay cylindrical fuse rated 15 A, 600 V AC and 300 V DC. Non-indicating design with time-delay characteristic for motor and transformer protection. Suitable for branch-circuit protection of inductive loads in industrial control panels and HVAC equipment
LITTELFUSE
Class RK5 time-delay cylindrical fuse rated 15 A, 600 V AC and 300 V DC. Non-indicating design with time-delay characteristic for motor and transformer protection. Suitable for branch-circuit protection of inductive loads in industrial control panels and HVAC equipment
The LITTELFUSE FLM002 is a 2 A, 250 V AC time-delay cylindrical fuse with a midget 13/32 in x 1 1/2 in body. It is non-indicating and part of the FLM series. This fuse is used for overcurrent protection in industrial control circuits, motor starters, and similar equipment where time-delay characteristics help prevent nuisance opening during temporary current surges
LITTELFUSE
The LITTELFUSE FLM002 is a 2 A, 250 V AC time-delay cylindrical fuse with a midget 13/32 in x 1 1/2 in body. It is non-indicating and part of the FLM series. This fuse is used for overcurrent protection in industrial control circuits, motor starters, and similar equipment where time-delay characteristics help prevent nuisance opening during temporary current surges

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first