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LITTELFUSE L75QS450.X Very-Fast-Acting Bolt-On Fuse, 450 A, 750 V DC - Very-Fast-Acting Bolt-On Fuses
LITTELFUSEVery-Fast-Acting Bolt-On Fuses

LITTELFUSE L75QS450.X Very-Fast-Acting Bolt-On Fuse, 450 A, 750 V DC

The LITTELFUSE L75QS Series is a very-fast-acting bolt-on semiconductor fuse rated at 450 A and 750 V DC. This non-indicating fuse is designed for DC-only applications, providing overcurrent protection for power…

SKU 3G-OTH-26171

Also listed as: L75QS450X · L75QS450 X · L75QS450-X

Brand
LITTELFUSE
Item
L75QS450.X Very-Fast-Acting Bolt-On Fuse, 450 A, 750 V DC
Part Number
L75QS450.X
Category
Very-Fast-Acting Bolt-On Fuses
Available to Order
Also known as:L75QS450.XLITTELFUSE
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Technical Specifications

LITTELFUSE
Manufacturer Part Number
L75QS450.X
Series
L75QS
Type
Very-Fast-Acting, 450 A, Non-Indicating
Voltage Type
DC Only
DC DC Volt Rating
750 V

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

Product Description

The LITTELFUSE L75QS Series is a very-fast-acting bolt-on semiconductor fuse rated at 450 A and 750 V DC. This non-indicating fuse is designed for DC-only applications, providing overcurrent protection for power electronic circuits.

Frequently Asked Questions

What is the LITTELFUSE L75QS450.X fuse used for?

The LITTELFUSE L75QS450.X is a very-fast-acting bolt-on semiconductor fuse used for overcurrent protection in DC power electronic circuits. It is rated at 450 A and 750 V DC, making it suitable for industrial drives, inverters, and DC power supplies where rapid fault clearing is critical.

What are the specifications of the L75QS450.X fuse?

The L75QS450.X is a LITTELFUSE L75QS Series very-fast-acting bolt-on fuse. It has a DC-only voltage rating of 750 V DC and a current rating of 450 A. It is non-indicating and designed for bolt-on mounting in semiconductor protection applications.

Where to buy the L75QS450.X fuse worldwide?

You can source the L75QS450.X fuse from 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; we supply genuine LITTELFUSE components.

How to select the correct L75QS series fuse for a DC circuit?

To select the correct L75QS fuse, match the DC voltage rating (750 V DC) and continuous current rating (e.g., 450 A) to your circuit requirements. Ensure the fuse's very-fast-acting characteristic coordinates with your semiconductor devices. Consult LITTELFUSE application notes for proper sizing and mounting.

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.
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LITTELFUSE Products

3G Electric supplies LITTELFUSE very-fast-acting 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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Very-fast-acting bolt-on fuse rated 400 A at 500 V AC and 500 V DC. Designed for overcurrent protection in power electronic circuits such as drives, inverters, and rectifiers. Bolt-on mounting ensures secure installation

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