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

LITTELFUSE Semiconductor Fuse: PSR Series, Very-Fast-Acting, 1.25 kA, 700 V AC - Very-Fast-Acting Threaded Flush-End Square Fuses
LITTELFUSEVery-Fast-Acting Threaded Flush-End Square Fuses

LITTELFUSE Semiconductor Fuse: PSR Series, Very-Fast-Acting, 1.25 kA, 700 V AC

The LITTELFUSE PSR Series Semiconductor Fuse (MPN PSR033FS1250Z) is a very-fast-acting threaded flush-end square fuse rated at 1.25 kA, 700 V AC, and 600 V DC. This AC/DC voltage type fuse is designed for overcurrent…

SKU 3G-OTH-25945

Brand
LITTELFUSE
Item
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 1.25 kA, 700 V AC
Category
Very-Fast-Acting Threaded Flush-End Square Fuses
Available to Order
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
PSR033FS1250Z
Series
PSR
Type
Very-Fast-Acting, 1.25 kA
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 PSR033FS1250Z) is a very-fast-acting threaded flush-end square fuse rated at 1.25 kA, 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 PSR Series semiconductor fuse used for?

The LITTELFUSE PSR Series semiconductor fuse (PSR033FS1250Z) provides overcurrent protection for industrial equipment such as drives, power supplies, and converters. Its very-fast-acting design safeguards sensitive semiconductor components from short circuits and overloads in AC/DC circuits up to 700 V AC and 600 V DC.

What are the specifications of the LITTELFUSE PSR033FS1250Z fuse?

The LITTELFUSE PSR033FS1250Z is a very-fast-acting threaded flush-end square fuse rated at 1.25 kA, 700 V AC, and 600 V DC. It belongs to the PSR Series and features an AC/DC voltage type. The manufacturer part number is PSR033FS1250Z, and it is designed for semiconductor protection.

Where to buy the LITTELFUSE PSR Series fuse worldwide?

You can source the LITTELFUSE PSR Series fuse (PSR033FS1250Z) through 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 source and deliver this fuse to your location.

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

To select the correct LITTELFUSE PSR Series fuse, match the voltage rating (700 V AC or 600 V DC) and current rating (1.25 kA) to your circuit requirements. Ensure the very-fast-acting characteristic aligns with the inrush current of your semiconductor device. Consult the fuse's time-current curve for coordination with upstream protection.

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 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

Compatible alternatives & equivalents

Cross-referenced by specification & description
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 1.1 kA, 700 V AC, 600 V DC DC Volt Rating (MPN PSR033FS1100Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 1.1 kA, 700 V AC, 600 V DC DC Volt Rating (MPN PSR033FS1100Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 1.4 kA, 700 V AC, 500 V DC DC Volt Rating (MPN PSR033FS1400Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 1.4 kA, 700 V AC, 500 V DC DC Volt Rating (MPN PSR033FS1400Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 450 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR033FS0450Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 450 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR033FS0450Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 1 kA, 700 V AC, 600 V DC DC Volt Rating (MPN PSR033FS1000Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 1 kA, 700 V AC, 600 V DC DC Volt Rating (MPN PSR033FS1000Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 125 A, 1,300 V AC, 1,000 V DC DC Volt Rating (MPN PSR070FS0125Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 125 A, 1,300 V AC, 1,000 V DC DC Volt Rating (MPN PSR070FS0125Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 900 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR033FS0900Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 900 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR033FS0900Z)

More from LITTELFUSE

View all LITTELFUSE parts
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 200 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR031FS0200Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 200 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR031FS0200Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 900 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR032FS0900Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 900 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR032FS0900Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 500 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR030FS0500Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 500 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR030FS0500Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 550 A, 1,300 V AC, 1,000 V DC DC Volt Rating (MPN PSR073FS0550Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 550 A, 1,300 V AC, 1,000 V DC DC Volt Rating (MPN PSR073FS0550Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 500 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR033FS0500Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 500 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR033FS0500Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 160 A, 1,300 V AC, 1,000 V DC DC Volt Rating (MPN PSR070FS0160Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 160 A, 1,300 V AC, 1,000 V DC DC Volt Rating (MPN PSR070FS0160Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 315 A, 1,300 V AC, 1,000 V DC DC Volt Rating (MPN PSR072FS0315Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 315 A, 1,300 V AC, 1,000 V DC DC Volt Rating (MPN PSR072FS0315Z)
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 400 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR032FS0400Z)
LITTELFUSE
Semiconductor Fuse: PSR Series, Very-Fast-Acting, 400 A, 700 V AC, 600 V DC DC Volt Rating (MPN PSR032FS0400Z)