MERSEN FUSE 500V SA 1,25 A 6.32 MI6SA50V1,25

MERSEN FUSE 500V SA 1,25 A 6.32 MI6SA50V1,25

Mersen M098129 MI6SA50V1.25 semiconductor miniature fuse rated at 1.25 A and 500 V AC, with a medium time-lag SA characteristic and 6.3 × 32 mm clip-mounted format.

SKU: M098129Alt SKU: MI6SA50V1,25MPN: M098129
Price
List Price £4.19 ex VAT
Your Price (ex VAT)
£4.19
Manufacturer Lead Time Please contact us for a delivery time before you order
Get the best trade prices Trade exclusive

Create a trade account to unlock exclusive pricing, special offers and more.

SUBTOTAL (EX VAT) £4.19
Trade pricing is personalised to your account

Manufacturer Lead Time

Sold in packs of 50

£4.19

Why Choose the Mersen M098129 MI6SA50V1.25 Semiconductor Miniature Fuse?

The Mersen M098129 is a compact 6.3 × 32 mm semiconductor miniature fuse designed to provide reliable overcurrent protection for sensitive electronic components and industrial control equipment. Part of the Mersen MI6SA50V1.25 range, it combines a medium time-lag operating characteristic with a high voltage rating for dependable protection in demanding electrical and electronic applications.

The fuse's SA medium time-lag characteristic allows it to tolerate brief current surges and normal inrush conditions while still responding effectively to sustained overloads and short-circuit faults. This makes it particularly suitable for circuits containing capacitors, transformers, power supplies and semiconductor devices that may experience temporary startup currents.

With a rated current of 1.25 A and a rated voltage of 500 V AC, the M098129 offers dependable protection in a compact clip-mounted format. Its very high breaking capacity and robust construction make it suitable for industrial automation, instrumentation, electronic equipment and OEM machinery.

Key Advantages

  • Compact semiconductor miniature fuse for sensitive electronic equipment.
  • 1.25 A current rating for low-current protection applications.
  • 500 V AC rated voltage for demanding industrial circuits.
  • Medium time-lag characteristic accommodates short-duration current surges.
  • Very high breaking capacity for dependable fault interruption.
  • Standard 6.3 × 32 mm format for compatible clip-mounted fuse holders.

Key Features

  • Mersen MI6SA50V1.25 series.
  • 1.25 A rated current.
  • 500 V AC rated voltage.
  • 6.3 × 32 mm miniature fuse format.
  • Medium time-lag SA operating characteristic.
  • Designed to protect sensitive semiconductor components.
  • Very high breaking capacity.
  • Clip-mounted installation.

Reliable Protection for Sensitive Electronic Components

Semiconductor miniature fuses are engineered to protect electronic components against damaging overcurrents while maintaining reliable circuit operation. The Mersen M098129 uses a medium time-lag characteristic that prevents unnecessary operation during brief current peaks, yet disconnects the circuit when a sustained electrical fault occurs.

This combination of surge tolerance, compact dimensions and high fault-interruption performance makes the M098129 well suited to modern industrial equipment where reliability, component protection and minimal downtime are essential.

Typical Applications

  • Semiconductor and electronic component protection.
  • Industrial automation and control equipment.
  • Power supplies and power conversion equipment.
  • Instrumentation and measuring systems.
  • Electronic control boards and assemblies.
  • OEM machinery and industrial electronics.

Technical Specifications

Current 25 A
Voltage 500 V
Manufacturer Mersen
Series MI6SA 500 V
Model MI6SA50V1.25
Item number M098129
Product type Semiconductor miniature fuse
Rated current 1.25 A
Rated voltage 500 V AC
Current type AC
Speed characteristic Medium time-lag SA
Fuse dimensions 6.3 × 32 mm
Mounting type Clip mounting
Breaking capacity Very high breaking capacity
EAN / UPC 3605340151480
Device Type Fuse link
Fuse Type Miniature, Semiconductor
Fuse Class Time delay

Frequently Asked Questions

What is the Mersen M098129 used for?

The M098129 is used to protect sensitive semiconductor components, electronic equipment and industrial control circuits against sustained overloads and short-circuit faults.

What is the current rating of the Mersen M098129?

The fuse has a rated current of 1.25 A.

What voltage is the M098129 rated for?

The Mersen M098129 is rated for operation at up to 500 V AC.

What does the SA characteristic mean?

The SA characteristic is a medium time-lag response that allows the fuse to withstand brief startup or inrush currents while protecting against sustained overcurrent faults.

What size is the Mersen M098129?

The fuse has a standard miniature cartridge size of 6.3 × 32 mm and is designed for clip mounting in a compatible fuse holder.

Trusted by Electrical and Electronic Engineers Worldwide

Mersen semiconductor miniature fuses are used by OEM manufacturers, automation engineers and maintenance professionals to provide reliable protection for sensitive electronic equipment and industrial control systems.

● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

 Priority sourcing and supply support

 Flexible payment terms for qualifying organisations

 Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 

Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

 

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

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

Can you help specify the correct part?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Do you have stock for urgent orders?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What are your delivery times and costs?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What about warranties, returns and faulty items?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

● latest blog

Discover  our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...