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MERSEN FUSE 400V SA 2,5 A 6.32 MI6SA40V2,5

MERSEN FUSE 400V SA 2,5 A 6.32 MI6SA40V2,5

Mersen Z078912 miniature semiconductor fuse, 6.3 × 32 mm ceramic cartridge, rated 2.5 A and 400 V AC for industrial semiconductor protection.

SKU: Z078912Alt SKU: MI6SA40V2,5MPN: Z078912
Price
List Price £3.70 ex VAT
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£3.70
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Why Choose the Mersen Z078912 Miniature Semiconductor Fuse?

The Mersen Z078912 is a compact 6.3 × 32 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 MI6SA40V2.5, it has a rated current of 2.5 A and a rated voltage of 400 V AC.

Part of the Mersen SA miniature semiconductor fuse series, the Z078912 features a medium time-lag operating characteristic that allows it to withstand temporary inrush currents while still providing reliable protection against sustained overloads and fault conditions. This makes it ideal for protecting sensitive power electronic equipment and industrial control systems.

Manufactured in the standard 6.3 × 32 mm cylindrical cartridge format, the fuse is intended for installation in compatible clip-mounted fuse holders. Its ceramic construction and dependable performance make it suitable for industrial electronics, instrumentation, automation systems and OEM equipment.

Key Advantages

  • Designed for semiconductor and electronic circuit protection.
  • 2.5 A rated current.
  • 400 V AC operating voltage.
  • Medium time-lag characteristic tolerates temporary inrush currents.
  • Compact 6.3 × 32 mm ceramic cartridge.
  • Suitable for industrial automation and electronic equipment.

Key Features

  • Mersen SA miniature semiconductor fuse series.
  • Item number: Z078912.
  • Catalogue number: MI6SA40V2.5.
  • 2.5 A rated current.
  • 400 V AC rated voltage.
  • Medium time-lag SA characteristic.
  • 6.3 × 32 mm ceramic cartridge.
  • Ferrule terminals for clip mounting.
  • Designed for semiconductor protection.
  • RoHS compliant.

Reliable Protection for Sensitive Electronic Equipment

Medium time-lag semiconductor fuses are designed to withstand brief current surges that occur during equipment start-up while still providing dependable protection against sustained overloads and short-circuit conditions. This helps reduce nuisance fuse operation without compromising circuit protection.

The Mersen Z078912 combines compact dimensions, ceramic construction and proven semiconductor protection characteristics, making it suitable for industrial automation, instrumentation, power supplies and OEM electronic equipment.

Typical Applications

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

Technical Specifications

Current 5 A
Voltage 400 V
Manufacturer Mersen
Series SA Miniature Semiconductor Fuses
Model Z078912
Catalogue number MI6SA40V2.5
Product type Miniature semiconductor fuse
Fuse size 6.3 × 32 mm
Rated current 2.5 A
Rated voltage 400 V AC
Electrical system AC
Fuse characteristic Medium time-lag (SA)
Pre-arcing I²t 4.6 A²s
Total clearing I²t 10 A²s
Mounting type Clip mounting
Connection type Ferrule
Body material Ceramic
Frequency 50 / 60 Hz
Pack quantity 50
Device Type Fuse link
Fuse Type Miniature, Semiconductor
Fuse Size 6.3x32 mm
Fuse Class Time delay

Frequently Asked Questions

What is the Mersen Z078912 used for?

The Z078912 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 2.5 A and 400 V AC.

What size is the fuse?

The Mersen Z078912 uses the standard 6.3 × 32 mm ceramic cartridge format.

Is this a time-lag fuse?

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

Where is the Z078912 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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