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

3G Electric
LITTELFUSE KLLU1000X Class L Time-Delay Bolt-On Fuse, 1 kA, 600 V AC, 300 V DC - Time-Delay Bolt-On Fuses
LITTELFUSETime-Delay Bolt-On Fuses

LITTELFUSE KLLU1000X Class L Time-Delay Bolt-On Fuse, 1 kA, 600 V AC, 300 V DC

The LITTELFUSE KLLU Series Class L Time-Delay Bolt-On Fuse (MPN KLLU1000X) is a 1 kA, 600 V AC, 300 V DC industrial fuse with a bolt-on body. This time-delay fuse is designed for overcurrent protection in electrical…

SKU 3G-OTH-25956

Brand
LITTELFUSE
Item
KLLU1000X Class L Time-Delay Bolt-On Fuse, 1 kA, 600 V AC, 300 V DC
Part Number
KLLU1000X
Category
Time-Delay Bolt-On Fuses
Available to Order
Also known as:KLLU1000XLITTELFUSE
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
KLLU1000X
Series
KLLU
Type
KLLU Series, Bolt-On Body, Time-Delay, 1 kA
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 KLLU Series Class L Time-Delay Bolt-On Fuse (MPN KLLU1000X) is a 1 kA, 600 V AC, 300 V DC industrial fuse with a bolt-on body. This time-delay fuse is designed for overcurrent protection in electrical distribution systems.

Frequently Asked Questions

What is the LITTELFUSE KLLU1000X fuse used for?

The LITTELFUSE KLLU1000X is a Class L time-delay bolt-on fuse rated 1 kA, 600 V AC, 300 V DC. It provides overcurrent protection in industrial electrical distribution systems, motor circuits, and feeder applications where high interrupting capacity and delayed response to inrush currents are required.

What are the specifications of the LITTELFUSE KLLU1000X?

The LITTELFUSE KLLU1000X is a KLLU Series Class L fuse with a bolt-on body. It is rated 1 kA, 600 V AC, 300 V DC, and features time-delay characteristics. The manufacturer part number is KLLU1000X. It is designed for high-current overcurrent protection in industrial power systems.

Where to buy the LITTELFUSE KLLU1000X worldwide?

3G Electric supplies the LITTELFUSE KLLU1000X fuse to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this KLLU Series Class L time-delay bolt-on fuse.

How to select the correct LITTELFUSE KLLU1000X fuse for an application?

Select the LITTELFUSE KLLU1000X based on system voltage (600 V AC or 300 V DC), continuous current (1 kA), and available fault current. The time-delay feature accommodates motor-starting inrush. Verify the bolt-on mounting style matches your fuse holder. Consult a qualified engineer for coordination studies.

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 bolt-on 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 KLPC3000X is a Class L, KLPC Series time-delay bolt-on fuse rated for 3 kA at 600 V AC and 480 V DC. Designed for bolt-on mounting, it provides overcurrent protection in industrial power distribution, motor circuits, and feeder applications requiring short-circuit and overload protection
LITTELFUSE
The LITTELFUSE KLPC3000X is a Class L, KLPC Series time-delay bolt-on fuse rated for 3 kA at 600 V AC and 480 V DC. Designed for bolt-on mounting, it provides overcurrent protection in industrial power distribution, motor circuits, and feeder applications requiring short-circuit and overload protection
Class L time-delay bolt-on fuse rated 450 A, 600 V AC, 480 V DC. Bolt-on body for secure mounting. Time-delay characteristic accommodates temporary overloads and inrush currents. Used in industrial power distribution, motor circuits, and feeder protection
LITTELFUSE
Class L time-delay bolt-on fuse rated 450 A, 600 V AC, 480 V DC. Bolt-on body for secure mounting. Time-delay characteristic accommodates temporary overloads and inrush currents. Used in industrial power distribution, motor circuits, and feeder protection

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first