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MERSEN FUSE 250V 5SF 0,25A 5.20 MI5SF25V0.25

MERSEN FUSE 250V 5SF 0,25A 5.20 MI5SF25V0.25

Mersen E090509 MI5SF25V0.25 5 x 20 mm fast-acting miniature fuse rated at 0.25 A and 250 V AC for industrial and electronic circuit protection.

SKU: E090509Alt SKU: MI5SF25V0.25MPN: E090509
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List Price £0.45 ex VAT
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Why Choose the Mersen E090509 MI5SF25V0.25 Miniature Fuse?

The Mersen E090509 (MI5SF25V0.25) is a high-quality 5 x 20 mm fast-acting miniature fuse designed to provide rapid overcurrent protection for electrical distribution circuits, electronic equipment and industrial control systems. Manufactured by Mersen, this IEC miniature fuse delivers dependable circuit protection for sensitive equipment where fast fault interruption is essential.

Part of the Mersen 5SF IEC miniature fuse series, the E090509 features a 0.25 A current rating and a 250 V AC voltage rating. Its fast-acting characteristic ensures rapid operation during overloads and short circuits, helping minimise equipment damage and improve system reliability.

Manufactured in the industry-standard 5 x 20 mm glass cartridge format, this fuse offers simple replacement and compatibility with a wide range of fuse holders used throughout industrial automation, instrumentation and commercial electrical equipment.

Key Advantages

  • Fast-acting protection for sensitive electrical and electronic circuits.
  • 0.25 A current rating for low-current applications.
  • 250 V AC IEC rating for industrial and commercial equipment.
  • Standard 5 x 20 mm miniature fuse dimensions.
  • Reliable protection against overloads and short circuits.
  • Manufactured to recognised IEC standards.

Key Features

  • Manufacturer: Mersen.
  • Series: 5SF IEC Miniature Fuses.
  • Catalogue number: MI5SF25V0.25.
  • Fast-acting operating characteristic.
  • Current rating: 0.25 A.
  • Rated voltage: 250 V AC.
  • 5 x 20 mm glass cartridge construction.
  • RoHS compliant.

Reliable Protection for Electrical Equipment

The Mersen E090509 provides rapid interruption of overload and fault currents, making it suitable for protecting sensitive electrical and electronic equipment where immediate disconnection is required. Its fast-acting characteristic helps minimise damage caused by short circuits and abnormal operating conditions.

Designed for industrial control panels, instrumentation, electronic assemblies and OEM equipment, this fuse combines compact dimensions with the proven reliability expected from Mersen electrical protection products.

Typical Applications

  • Industrial control panels.
  • Electronic equipment.
  • Instrumentation systems.
  • Power supplies.
  • Automation equipment.
  • OEM machinery and electrical assemblies.

Technical Specifications

Current 25 A
Voltage 250 V
Manufacturer Mersen
Series 5SF IEC Miniature Fuses
Part number E090509
Catalogue number MI5SF25V0.25
Product type Fast-acting miniature fuse
Fuse size 5 x 20 mm
Current rating 0.25 A
Rated voltage 250 V AC
Current type AC
Operating characteristic Fast-acting (F)
Breaking capacity 35 A
Mounting Suitable for 5 x 20 mm fuse holders
RoHS compliant Yes
Device Type Fuse link
Fuse Type Miniature
Fuse Size 5x20 mm
Fuse Class Fast acting

Frequently Asked Questions

What is the Mersen E090509 used for?

It provides fast overcurrent protection for industrial, electronic and automation equipment requiring rapid fault interruption.

What is the current rating of this fuse?

The fuse has a 0.25 A (250 mA) current rating.

What voltage is this fuse rated for?

The E090509 is rated for 250 V AC operation.

Why choose a fast-acting fuse?

A fast-acting fuse responds quickly to overloads and short circuits, making it ideal for protecting sensitive electronic and electrical equipment.

What size is this fuse?

The fuse is manufactured in the standard 5 x 20 mm miniature glass cartridge format.

Trusted by Electrical Professionals Worldwide

Mersen miniature fuses are trusted by OEMs, panel builders and maintenance engineers worldwide for dependable circuit protection across industrial automation, electrical distribution and electronic equipment.

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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

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