Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
LITTELFUSE Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 350 A, 500 V AC - Very-Fast-Acting Bolt-On Fuses
LITTELFUSEVery-Fast-Acting Bolt-On Fuses

LITTELFUSE Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 350 A, 500 V AC

The LITTELFUSE L50QS Series is a very-fast-acting bolt-on semiconductor fuse, model L50QS350.V, rated for 350 A at 500 V AC and 500 V DC. This fuse provides overcurrent protection for power electronic circuits, with…

SKU 3G-OTH-25678

Brand
LITTELFUSE
Item
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 350 A, 500 V AC
Category
Very-Fast-Acting Bolt-On Fuses
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

LITTELFUSE
Manufacturer Part Number
L50QS350.V
Series
L50QS
Type
Very-Fast-Acting, 350 A
AC
500 V
Voltage Type
AC/DC
DC DC Volt Rating
500 V
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The LITTELFUSE L50QS Series is a very-fast-acting bolt-on semiconductor fuse, model L50QS350.V, rated for 350 A at 500 V AC and 500 V DC. This fuse provides overcurrent protection for power electronic circuits, with a compact bolt-on design for secure installation.

Frequently Asked Questions

What is the LITTELFUSE L50QS350.V fuse used for?

The LITTELFUSE L50QS350.V is a very-fast-acting bolt-on semiconductor fuse used for overcurrent protection in power electronic circuits, such as inverters, drives, and UPS systems. Its 350 A rating at 500 V AC/DC makes it suitable for high-power industrial equipment requiring rapid fault clearing.

What are the specifications of the L50QS350.V fuse?

The L50QS350.V is a LITTELFUSE L50QS series very-fast-acting bolt-on fuse rated for 350 A at 500 V AC and 500 V DC. It features a compact bolt-on design for secure installation and is designed for overcurrent protection in power electronics. The voltage type is AC/DC.

Where to buy LITTELFUSE L50QS350.V worldwide?

3G Electric supplies the LITTELFUSE L50QS350.V fuse worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this very-fast-acting semiconductor fuse to any country.

How to select the correct L50QS fuse for my application?

To select the correct L50QS fuse, match the voltage rating (500 V AC/DC) and current rating (350 A for this model) to your circuit requirements. Ensure the very-fast-acting characteristic suits your semiconductor protection needs. Consult the LITTELFUSE datasheet for mounting and derating guidelines. 3G Electric can assist with selection.

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 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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 500 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS500.X). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 500 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS500.X). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 150 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS150.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 150 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS150.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 275 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS275.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 275 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS275.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 300 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS300.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 300 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS300.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 325 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS325.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 325 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS325.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 200 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS200.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 200 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS200.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.

More from LITTELFUSE

View all LITTELFUSE parts →
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 225 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS225.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 225 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS225.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
Semiconductor Fuse: L70QS Series, Very-Fast-Acting, 80 A, 700 V AC, 700 V DC DC Volt Rating (MPN L70QS080.V). Key specifications — Series: L70QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L70QS Series, Very-Fast-Acting, 80 A, 700 V AC, 700 V DC DC Volt Rating (MPN L70QS080.V). Key specifications — Series: L70QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
Semiconductor Fuse: L75QS Series, Very-Fast-Acting, 40 A, 750 V DC DC Volt Rating, Non-Indicating (MPN L75QS040.V). Key specifications — Series: L75QS; Brand: LITTELFUSE; Voltage Type: DC Only.
LITTELFUSE
Semiconductor Fuse: L75QS Series, Very-Fast-Acting, 40 A, 750 V DC DC Volt Rating, Non-Indicating (MPN L75QS040.V). Key specifications — Series: L75QS; Brand: LITTELFUSE; Voltage Type: DC Only.
Semiconductor Fuse: L75QS Series, Very-Fast-Acting, 125 A, 750 V DC DC Volt Rating, Non-Indicating (MPN L75QS125.V). Key specifications — Series: L75QS; Brand: LITTELFUSE; Voltage Type: DC Only.
LITTELFUSE
Semiconductor Fuse: L75QS Series, Very-Fast-Acting, 125 A, 750 V DC DC Volt Rating, Non-Indicating (MPN L75QS125.V). Key specifications — Series: L75QS; Brand: LITTELFUSE; Voltage Type: DC Only.
Semiconductor Fuse: L70QS Series, Very-Fast-Acting, 250 A, 700 V AC, 700 V DC DC Volt Rating (MPN L70QS250.X). Key specifications — Series: L70QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L70QS Series, Very-Fast-Acting, 250 A, 700 V AC, 700 V DC DC Volt Rating (MPN L70QS250.X). Key specifications — Series: L70QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
Semiconductor Fuse: L70QS Series, Very-Fast-Acting, 600 A, 700 V AC, 700 V DC DC Volt Rating (MPN L70QS600.X). Key specifications — Series: L70QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L70QS Series, Very-Fast-Acting, 600 A, 700 V AC, 700 V DC DC Volt Rating (MPN L70QS600.X). Key specifications — Series: L70QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 400 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS400.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 400 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS400.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 250 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS250.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.
LITTELFUSE
Semiconductor Fuse: L50QS Series, Very-Fast-Acting, 250 A, 500 V AC, 500 V DC DC Volt Rating (MPN L50QS250.V). Key specifications — Series: L50QS; Brand: LITTELFUSE; Voltage Type: AC/DC.