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3G Electric
LITTELFUSE PSR Series 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 PSR Series Very-Fast-Acting Threaded Flush-End Square Fuse

The LITTELFUSE PSR Series Semiconductor Fuse is a very-fast-acting threaded flush-end square fuse rated at 550 A, 1,300 V AC, and 1,000 V DC (MPN PSR073FS0550Z). This AC/DC voltage type fuse is designed for…

SKU 3G-OTH-26710

Brand
LITTELFUSE
Item
PSR Series Very-Fast-Acting Threaded Flush-End Square Fuse
Part Number
PSR073FS0550Z
Category
Very-Fast-Acting Threaded Flush-End Square Fuses
Available to Order
Also known as:PSR073FS0550ZLITTELFUSE
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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
PSR073FS0550Z
Series
PSR
Type
Very-Fast-Acting, 550 A
AC
1,300 V
Voltage Type
AC/DC
DC DC Volt Rating
1,000 V

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

Product Description

The LITTELFUSE PSR Series Semiconductor Fuse is a very-fast-acting threaded flush-end square fuse rated at 550 A, 1,300 V AC, and 1,000 V DC (MPN PSR073FS0550Z). This AC/DC voltage type fuse is designed for overcurrent protection in industrial equipment.

Frequently Asked Questions

What is the LITTELFUSE PSR073FS0550Z semiconductor fuse used for?

The LITTELFUSE PSR Series very-fast-acting fuse (MPN PSR073FS0550Z) protects industrial power electronics, drives, and inverters from overcurrent. Rated 550 A, 1,300 V AC, and 1,000 V DC, it clears faults rapidly to safeguard sensitive semiconductor circuits in manufacturing and process equipment.

What are the specifications of the LITTELFUSE PSR073FS0550Z fuse?

This PSR Series fuse is very-fast-acting with a threaded flush-end square body. It is rated 550 A, 1,300 V AC, and 1,000 V DC (AC/DC voltage type). The manufacturer part number is PSR073FS0550Z. It is designed for high-voltage overcurrent protection in industrial applications.

Where to buy the LITTELFUSE PSR073FS0550Z fuse worldwide?

3G Electric supplies the LITTELFUSE PSR073FS0550Z semiconductor fuse to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this very-fast-acting 550 A, 1,300 V AC / 1,000 V DC fuse.

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

Select a PSR series fuse by matching its voltage rating (AC and DC), current rating (550 A for this model), and interrupting capacity to your circuit. Ensure the very-fast-acting characteristic suits sensitive semiconductor loads. Consult the manufacturer's data sheet for mounting and coordination guidelines.

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 threaded flush-end square 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 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

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