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LITTELFUSE L75QS500.X Very-Fast-Acting Bolt-On Fuse, 500 A, 750 V DC - Very-Fast-Acting Bolt-On Fuses
LITTELFUSEVery-Fast-Acting Bolt-On Fuses

LITTELFUSE L75QS500.X Very-Fast-Acting Bolt-On Fuse, 500 A, 750 V DC

The LITTELFUSE L75QS Series is a very-fast-acting bolt-on semiconductor fuse, model L75QS500.X, rated for 500 A at 750 V DC. This DC-only fuse is designed for overcurrent protection in power electronic circuits. It…

SKU 3G-OTH-25651

Also listed as: L75QS500X · L75QS500 X · L75QS500-X

Brand
LITTELFUSE
Item
L75QS500.X Very-Fast-Acting Bolt-On Fuse, 500 A, 750 V DC
Part Number
L75QS500.X
Category
Very-Fast-Acting Bolt-On Fuses
Available to Order
Also known as:L75QS500.XLITTELFUSE
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Technical Specifications

LITTELFUSE
Manufacturer Part Number
L75QS500.X
Series
L75QS
Type
Very-Fast-Acting, 500 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 L75QS500.X, rated for 500 A at 750 V DC. This DC-only fuse is designed for overcurrent protection in power electronic circuits. It is a non-indicating, bolt-on style fuse from the L75QS series.

Frequently Asked Questions

What is the LITTELFUSE L75QS500.X fuse used for?

The LITTELFUSE L75QS500.X is a very-fast-acting bolt-on semiconductor fuse used for overcurrent protection in DC power electronic circuits, such as inverters, drives, and UPS systems. Its 500 A rating and 750 V DC voltage rating make it suitable for high-power DC applications requiring rapid fault clearing.

What are the specifications of the L75QS500.X fuse?

The L75QS500.X is a very-fast-acting, non-indicating bolt-on fuse from the LITTELFUSE L75QS Series. It is rated for 500 A at 750 V DC only. The part number is L75QS500.X, and it is designed for DC overcurrent protection in power electronics.

Where to buy the L75QS500.X fuse worldwide?

You can source the L75QS500.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 for your DC protection needs.

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., 500 A for the L75QS500.X) to your circuit requirements. Ensure the fuse is very-fast-acting for semiconductor protection. Consult LITTELFUSE application notes for coordination with your equipment.

Used in

Common applications for LITTELFUSE
Industrial drives — Littelfuse PSR series semiconductor fuses for overcurrent protection of variable-frequency drives and DC bus circuits.
Branch circuit protection — Littelfuse CCMR series time-delay fuses in control panels and distribution boards.
Compact equipment — Littelfuse SLC series Class G fuses in rejection-style holders for space-constrained branch circuits.
Main service entrance — Littelfuse KLPC series Class L bolt-on fuses for high-current industrial power distribution.
Motor circuits — Littelfuse FLSR series Class RK5 time-delay fuses for motor branch circuits and transformers.
Power supplies — Littelfuse 473 series axial-lead time-delay fuses for solder-in protection in power supplies and instrumentation.
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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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LITTELFUSE
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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