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LITTELFUSE L50QS400.V Very-Fast-Acting Bolt-On Fuse, 400 A, 500 V AC/DC - Very-Fast-Acting Bolt-On Fuses
LITTELFUSEVery-Fast-Acting Bolt-On Fuses

LITTELFUSE L50QS400.V Very-Fast-Acting Bolt-On Fuse, 400 A, 500 V AC/DC

The LITTELFUSE L50QS Series is a very-fast-acting bolt-on semiconductor fuse rated at 400 A and 500 V AC/DC (MPN L50QS400.V). Designed for AC/DC voltage applications, this fuse provides overcurrent protection for…

SKU 3G-OTH-25625

Also listed as: L50QS400V · L50QS400 V · L50QS400-V

Brand
LITTELFUSE
Item
L50QS400.V Very-Fast-Acting Bolt-On Fuse, 400 A, 500 V AC/DC
Part Number
L50QS400.V
Category
Very-Fast-Acting Bolt-On Fuses
Available to Order
Also known as:L50QS400.VLITTELFUSE
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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
L50QS400.V
Series
L50QS
Type
Very-Fast-Acting, 400 A
AC
500 V
Voltage Type
AC/DC
DC DC Volt Rating
500 V

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

Product Description

The LITTELFUSE L50QS Series is a very-fast-acting bolt-on semiconductor fuse rated at 400 A and 500 V AC/DC (MPN L50QS400.V). Designed for AC/DC voltage applications, this fuse provides overcurrent protection for power electronic circuits.

Frequently Asked Questions

What is the LITTELFUSE L50QS400.V semiconductor fuse used for?

The LITTELFUSE L50QS400.V is a very-fast-acting bolt-on fuse rated at 400 A and 500 V AC/DC. It protects power electronic circuits such as drives, inverters, and rectifiers from overcurrent faults, minimizing damage to sensitive semiconductor components.

What are the specifications of the L50QS400.V fuse?

The L50QS400.V is a 400 A, very-fast-acting semiconductor fuse from LITTELFUSE. It has an AC voltage rating of 500 V and a DC voltage rating of 500 V. The series is L50QS, and the voltage type is AC/DC. It is a bolt-on design for secure mounting.

Where to buy the LITTELFUSE L50QS400.V fuse worldwide?

3G Electric supplies the LITTELFUSE L50QS400.V fuse to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time; we source genuine industrial components across 14 departments.

How to select the correct L50QS fuse for a circuit?

To select the correct L50QS fuse, match the voltage rating (500 V AC/DC) and current rating (400 A) to your circuit requirements. Ensure the very-fast-acting characteristic aligns with the inrush current of your semiconductor load. Consult the manufacturer's data sheet for interrupting ratings and mounting dimensions.

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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