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

3G Electric
LITTELFUSE PSR031FS0450Z Very-Fast-Acting Threaded Flush-End Square Fuse - Very-Fast-Acting Threaded Flush-End Square Fuses
LITTELFUSEVery-Fast-Acting Threaded Flush-End Square Fuses

LITTELFUSE PSR031FS0450Z Very-Fast-Acting Threaded Flush-End Square Fuse

The LITTELFUSE PSR Series Semiconductor Fuse (MPN PSR031FS0450Z) is a very-fast-acting threaded flush-end square fuse rated at 450 A, 700 V AC, and 600 V DC. This AC/DC voltage type fuse is designed for overcurrent…

SKU 3G-OTH-25474

Brand
LITTELFUSE
Item
PSR031FS0450Z Very-Fast-Acting Threaded Flush-End Square Fuse
Part Number
PSR031FS0450Z
Category
Very-Fast-Acting Threaded Flush-End Square Fuses
Available to Order
Also known as:PSR031FS0450ZLITTELFUSE
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
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

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

LITTELFUSE
Manufacturer Part Number
PSR031FS0450Z
Series
PSR
Type
Very-Fast-Acting, 450 A
AC
700 V
Voltage Type
AC/DC
DC DC Volt Rating
600 V

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 PSR Series Semiconductor Fuse (MPN PSR031FS0450Z) is a very-fast-acting threaded flush-end square fuse rated at 450 A, 700 V AC, and 600 V DC. This AC/DC voltage type fuse is designed for overcurrent protection in industrial equipment.

Frequently Asked Questions

What is the LITTELFUSE PSR031FS0450Z semiconductor fuse used for?

The LITTELFUSE PSR031FS0450Z is a very-fast-acting semiconductor fuse rated 450 A, 700 V AC, and 600 V DC. It protects industrial power electronics, drives, and inverters from overcurrent faults, ensuring equipment reliability in manufacturing and process control systems.

What are the specifications of the LITTELFUSE PSR031FS0450Z?

This PSR Series fuse is rated 450 A, 700 V AC, and 600 V DC. It is a very-fast-acting threaded flush-end square fuse with AC/DC voltage type. The manufacturer part number is PSR031FS0450Z, and it is designed for overcurrent protection in industrial equipment.

Where to buy the LITTELFUSE PSR031FS0450Z worldwide?

3G Electric supplies the LITTELFUSE PSR031FS0450Z semiconductor fuse worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this very-fast-acting 450 A fuse.

How to select the correct LITTELFUSE PSR series fuse for an application?

Select the PSR series fuse based on continuous current (450 A), system voltage (700 V AC or 600 V DC), and fault-clearing speed (very-fast-acting). Verify the threaded flush-end mounting style matches your panel layout. Consult the LITTELFUSE datasheet for I²t and breaking capacity limits.

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.
Not sure this is the right part? Photo-identify it

LITTELFUSE Products

3G Electric supplies LITTELFUSE very-fast-acting threaded flush-end square 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

More from LITTELFUSE

View all LITTELFUSE parts
Very-fast-acting threaded flush-end square fuse rated 160 A, 1300 V AC, and 1000 V DC. Designed for overcurrent protection in power electronics such as variable-frequency drives and rectifiers. AC/DC voltage type with rapid interruption capability
LITTELFUSE
Very-fast-acting threaded flush-end square fuse rated 160 A, 1300 V AC, and 1000 V DC. Designed for overcurrent protection in power electronics such as variable-frequency drives and rectifiers. AC/DC voltage type with rapid interruption capability

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first