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LITTELFUSE Fuse: Class L, KLLU Series, Bolt-On Body, Time-Delay, 1.8 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, 1.8 kA, 600 V AC

The LITTELFUSE KLLU Series Class L Time-Delay Bolt-On Fuse (MPN KLLU1800X) is a 1.8 kA, 600 V AC, 300 V DC industrial fuse with a bolt-on body. It provides time-delay operation for overcurrent protection in…

SKU 3G-OTH-26169

Brand
LITTELFUSE
Item
Fuse: Class L, KLLU Series, Bolt-On Body, Time-Delay, 1.8 kA, 600 V AC
Category
Time-Delay Bolt-On Fuses
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Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

LITTELFUSE
Manufacturer Part Number
KLLU1800X
Series
KLLU
Type
KLLU Series, Bolt-On Body, Time-Delay, 1.8 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 KLLU1800X) is a 1.8 kA, 600 V AC, 300 V DC industrial fuse with a bolt-on body. It provides time-delay operation for overcurrent protection in high-current circuits.

Frequently Asked Questions

What is the LITTELFUSE KLLU1800X fuse used for?

The LITTELFUSE KLLU1800X is a Class L time-delay bolt-on fuse rated 1.8 kA, 600 V AC, 300 V DC. It protects high-current industrial circuits, such as feeders, switchboards, and motor control centers, against overcurrent and short circuits. Its time-delay characteristic allows harmless inrush currents without nuisance opening.

What are the specifications of the LITTELFUSE KLLU1800X?

The LITTELFUSE KLLU1800X is a KLLU Series Class L bolt-on fuse with time-delay operation. Key specs: 1.8 kA current rating, 600 V AC, 300 V DC. The bolt-on body ensures secure mounting in high-current distribution equipment. It is manufactured by LITTELFUSE under MPN KLLU1800X.

Where to buy the LITTELFUSE KLLU1800X worldwide?

3G Electric supplies the LITTELFUSE KLLU1800X fuse worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time. We source genuine LITTELFUSE components for industrial overcurrent protection applications.

How to select the correct LITTELFUSE KLLU Series fuse?

Select the LITTELFUSE KLLU Series fuse based on system voltage (600 V AC or 300 V DC), continuous current (1.8 kA), and available fault current. The time-delay feature suits motor or transformer circuits with high inrush. Verify bolt-on mounting dimensions match your panel. 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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