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LITTELFUSE L75QS250.X Very-Fast-Acting Bolt-On Fuse - Very-Fast-Acting Bolt-On Fuses
LITTELFUSEVery-Fast-Acting Bolt-On Fuses

LITTELFUSE L75QS250.X Very-Fast-Acting Bolt-On Fuse

The LITTELFUSE L75QS Series is a very-fast-acting bolt-on semiconductor fuse, model L75QS250.X, rated for 250 A at 750 V DC. This DC-only fuse is designed for overcurrent protection in power electronic circuits. It…

SKU 3G-OTH-25902

Also listed as: L75QS250X · L75QS250 X · L75QS250-X

Brand
LITTELFUSE
Item
L75QS250.X Very-Fast-Acting Bolt-On Fuse
Part Number
L75QS250.X
Category
Very-Fast-Acting Bolt-On Fuses
Available to Order
Also known as:L75QS250.XLITTELFUSE
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

LITTELFUSE
Manufacturer Part Number
L75QS250.X
Series
L75QS
Type
Very-Fast-Acting, 250 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, model L75QS250.X, rated for 250 A at 750 V DC. This DC-only fuse is designed for overcurrent protection in power electronic circuits. It is a non-indicating fuse from the L75QS series.

Frequently Asked Questions

What is the LITTELFUSE L75QS250.X semiconductor fuse used for?

The LITTELFUSE L75QS250.X is a very-fast-acting bolt-on fuse used for overcurrent protection in power electronic circuits such as drives, inverters, and DC power supplies. Its 750 V DC rating makes it suitable for high-voltage DC applications where rapid fault clearing is critical.

What are the specifications of the L75QS250.X fuse?

The L75QS250.X is a LITTELFUSE L75QS series very-fast-acting, non-indicating semiconductor fuse. It is rated for 250 A at 750 V DC only. The bolt-on design ensures secure mounting in power electronic equipment. It is a DC-only voltage type fuse.

Where to buy the LITTELFUSE L75QS250.X fuse worldwide?

3G Electric supplies the LITTELFUSE L75QS250.X fuse worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this very-fast-acting 250 A, 750 V DC semiconductor fuse.

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

To select the correct L75QS fuse, match the continuous current rating (250 A for the L75QS250.X) to your circuit's normal load, and ensure the voltage rating (750 V DC) exceeds the system voltage. Verify the interrupting rating meets fault current requirements. Always consult the manufacturer's application notes for 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.
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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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