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LITTELFUSE Fuse: Class L, KLLU Series, Bolt-On Body, Time-Delay, 1 kA, 600 V AC - Time-Delay Bolt-On Fuses
LITTELFUSETime-Delay Bolt-On Fuses

LITTELFUSE Fuse: Class L, KLLU Series, Bolt-On Body, Time-Delay, 1 kA, 600 V AC

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
Fuse: Class L, KLLU Series, Bolt-On Body, Time-Delay, 1 kA, 600 V AC
Category
Time-Delay Bolt-On Fuses
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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

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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.

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.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
LITTELFUSE Fuse: Class L, KLLU Series, Bolt-On Body, Time-Delay, 1.2 kA, 600 V AC, 300 V DC (MPN KLLU1200X)
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LITTELFUSE Fuse: Class L, KLLU Series, Bolt-On Body, Time-Delay, 1.2 kA, 600 V AC, 300 V DC (MPN KLLU1200X)
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LITTELFUSE Fuse: Class L, KLLU Series, Bolt-On Body, Time-Delay, 900 A, 600 V AC, 300 V DC (MPN KLLU900.X)
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LITTELFUSE Fuse: Class L, KLLU Series, Bolt-On Body, Time-Delay, 900 A, 600 V AC, 300 V DC (MPN KLLU900.X)
LITTELFUSE Fuse: Class L, KLLU Series, Bolt-On Body, Time-Delay, 1.5 kA, 600 V AC, 300 V DC (MPN KLLU1500X)
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LITTELFUSE Fuse: Class L, KLLU Series, Bolt-On Body, Time-Delay, 1.5 kA, 600 V AC, 300 V DC (MPN KLLU1500X)

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