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MERSEN FUSE 400V SA 1,25 A 5.20 MI5SA40V1,25

MERSEN FUSE 400V SA 1,25 A 5.20 MI5SA40V1,25

Mersen Y095494 miniature semiconductor fuse, 5 × 20 mm ceramic cartridge, rated 1.25 A and 400 V AC for industrial semiconductor protection.

SKU: Y095494Alt SKU: MI5SA40V1,25MPN: Y095494
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Sold in packs of 50

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Why Choose the Mersen Y095494 Miniature Semiconductor Fuse?

The Mersen Y095494 is a high-performance 5 × 20 mm miniature semiconductor fuse designed to provide dependable protection for sensitive electronic and semiconductor equipment against overloads and short-circuit faults. Also identified by catalogue number MI5SA40V1.25, it has a rated current of 1.25 A and a rated voltage of 400 V AC.

Part of the Mersen SA miniature semiconductor fuse series, the Y095494 features a medium time-lag characteristic that allows it to withstand temporary inrush currents while still providing rapid protection against sustained overloads and fault conditions. Its ceramic construction ensures reliable operation in demanding industrial environments.

Manufactured in the standard 5 × 20 mm cartridge format, the Y095494 is intended for installation in compatible clip-mounted fuse holders. Its compact size and controlled time-current characteristics make it ideal for industrial electronics, automation equipment, instrumentation and OEM electrical assemblies.

Key Advantages

  • Designed for semiconductor and electronic circuit protection.
  • 1.25 A rated current.
  • 400 V AC operating voltage.
  • Medium time-lag characteristic reduces nuisance operation.
  • Compact 5 × 20 mm ceramic cartridge.
  • Suitable for industrial control and automation equipment.

Key Features

  • Mersen SA miniature semiconductor fuse series.
  • Model: Y095494.
  • Catalogue number: MI5SA40V1.25.
  • 1.25 A rated current.
  • 400 V AC rated voltage.
  • Medium time-lag SA characteristic.
  • 5 × 20 mm ceramic cartridge fuse.
  • Clip-mounted installation.
  • Designed for semiconductor protection.
  • RoHS and REACH compliant.

Reliable Protection for Sensitive Electronic Equipment

Semiconductor protection fuses are engineered to interrupt fault currents before excessive energy can damage sensitive electronic components. Medium time-lag designs also withstand brief inrush currents generated during equipment start-up, helping avoid unnecessary fuse operation while maintaining dependable protection.

The Mersen Y095494 combines compact dimensions, ceramic construction and proven semiconductor protection characteristics, making it suitable for industrial automation, instrumentation, electronic power supplies and OEM equipment.

Typical Applications

  • Industrial power supplies.
  • Semiconductor protection circuits.
  • Automation equipment.
  • Instrumentation systems.
  • Electronic control equipment.
  • OEM electronic assemblies.

Technical Specifications

Current 25 A
Voltage 400 V
Manufacturer Mersen
Series SA Miniature Semiconductor Fuses
Model Y095494
Catalogue number MI5SA40V1.25
Product type Miniature semiconductor fuse
Fuse size 5 × 20 mm
Rated current 1.25 A
Rated voltage 400 V AC
Frequency 50 / 60 Hz
Fuse characteristic Medium time-lag (SA)
Mounting type Clip mounting
Body material Ceramic
Pre-arcing I²t 0.55 A²s
Total clearing I²t 2.25 A²s
Application Semiconductor and electronic circuit protection
EAN 3605340131864
Pack quantity 50
Device Type Fuse link
Fuse Type Miniature, Semiconductor
Fuse Size 5x20 mm
Fuse Class Time delay

Frequently Asked Questions

What is the Mersen Y095494 used for?

The Y095494 is a miniature semiconductor fuse designed to protect sensitive electronic circuits and semiconductor devices from overloads and short-circuit faults.

What are the electrical ratings?

The fuse is rated at 1.25 A and 400 V AC.

What size is the fuse?

The Mersen Y095494 uses the standard 5 × 20 mm ceramic cartridge format.

Is this a time-lag fuse?

Yes. It features a medium time-lag SA characteristic that allows it to tolerate short-duration inrush currents while protecting against sustained overloads.

Where is the Y095494 commonly used?

It is commonly installed in industrial electronics, power supplies, automation systems, instrumentation and semiconductor protection circuits.

Trusted by Electrical Professionals Worldwide

Mersen miniature semiconductor fuses are trusted by equipment manufacturers, automation engineers and maintenance professionals for dependable overcurrent protection and reliable performance in demanding electronic applications.

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