Call Us Today
01706 242050
Trade Portal
MERSEN FUSE 6,9 URS 17/40 6,9URS17/40

MERSEN FUSE 6,9 URS 17/40 6,9URS17/40

British Standard fuse-link Protistor® 17×49 gR 690V AC UL 40A providing reliable overcurrent protection with high interrupting capacity and fast-acting characteristics.

SKU: M075888Alt SKU: BS17US69V40MPN: M075888
Price
List Price £36.90 ex VAT
Your Price (ex VAT)
£36.90
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.

Sign up for a trade account Quick & easy setup
SUBTOTAL (EX VAT) £36.90
Trade pricing is personalised to your account

Manufacturer Lead Time

Sold in packs of 10

£36.90

Why Choose the Mersen M075888 Protistor® BS17US69V40 Fuse?

The Mersen M075888 is a high-performance Protistor® BS17US69V40 semiconductor protection fuse designed to provide exceptionally fast protection for power semiconductors and sensitive industrial electrical equipment. Manufactured by Mersen, this British Standard BS88-4 fuse-link is engineered for demanding applications where rapid fault clearance is essential to minimise equipment damage and maximise system reliability.

Designed for the protection of semiconductor devices including drives, inverters, soft starters and power converters, the M075888 combines a high breaking capacity with dependable current limiting performance. Its compact 17 × 49 mm design makes it suitable for installation in compatible industrial fuse holders and electrical distribution equipment.

With a 40 A current rating and a 690 V AC IEC voltage rating, the M075888 delivers reliable protection in industrial automation, renewable energy, motor control and power conversion applications where semiconductor devices require rapid fault protection.

Key Advantages

  • Genuine Mersen Protistor® semiconductor protection fuse.
  • 40 A current rating for industrial applications.
  • 690 V AC IEC rated voltage.
  • High-speed protection for sensitive semiconductor devices.
  • Extremely high breaking capacity for improved electrical safety.
  • Manufactured to BS88-4 and IEC semiconductor fuse standards.

Key Features

  • Manufacturer: Mersen.
  • Part number: M075888.
  • Catalogue number: BS17US69V40.
  • Protistor® BS88-4 semiconductor fuse-link.
  • 40 A rated current.
  • 690 V AC IEC rating (700 V AC UL).
  • 17 × 49 mm British Standard fuse format.
  • Designed for semiconductor and power electronics protection.

Fast Protection for Power Electronics

High-speed semiconductor fuses are specifically engineered to protect sensitive power electronic components from damaging short circuits and fault currents. Their rapid operating characteristics help minimise damage to expensive semiconductor devices while reducing system downtime and maintenance costs.

The Mersen Protistor® range is widely used throughout industrial automation, renewable energy systems, UPS installations, motor drives and power conversion equipment where reliable semiconductor protection is critical to safe and efficient operation.

Typical Applications

  • Variable frequency drives (VFDs).
  • Power converters and rectifiers.
  • Industrial motor control equipment.
  • Renewable energy inverters.
  • UPS systems.
  • Semiconductor protection in industrial automation.

Technical Specifications

Item number M075888
Catalogue No BS17US69V40
Description British Standard fuse-link Protistor® 17x49 gR 690V AC UL 40A
EAN/UPC Code 3605340012545
Rated voltage AC UL 700 V
Rated voltage DC UL 700 V
Rated voltage AC IEC 690 V
Ampere Rating 40 A
AC or DC AC
Speed/Characteristic aR
Fuse Size 17x49
Mounting Bolted
Clearing I2t At Rated Voltage 1080 A²s
Melting I2t 98 A²s
AC Max I.R./Breaking Capacity I1: 200 kA
Connection/Terminal Material Copper
Connection/Terminal Type L Brackets
Product Diameter 18.5 mm
Product Length 77.2 mm
Sell Pack Quantity 10 EA
Sell Pack Weight 0.39 kg
Sell Pack Width 100 mm
Sell Pack Length 195 mm
Sell Pack Height 25 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 0.039 kg
Power Dissipation at Rated Current Value 10.5 W
HS Code 85361050
Country of Manufacture India
Fuse Type Semiconductor
Fuse Size 17x49 mm
Fuse Class aR
Voltage 690 V

Frequently Asked Questions

What is the Mersen M075888 used for?

The M075888 is a high-speed semiconductor protection fuse designed to protect power electronic devices such as drives, converters and inverters from fault currents.

What is the current rating of the M075888?

The fuse has a 40 A current rating.

What voltage is this fuse designed for?

The M075888 is rated for 690 V AC under IEC standards and 700 V AC/DC under UL specifications.

Which standards does the fuse comply with?

It is manufactured as a BS88-4 semiconductor fuse and complies with IEC 60269 semiconductor fuse requirements.

Where is the M075888 typically installed?

It is commonly installed within compatible fuse holders protecting industrial drives, converters, power supplies and semiconductor equipment.

Trusted Semiconductor Protection Worldwide

Mersen Protistor® semiconductor fuses are trusted by electrical engineers and industrial manufacturers worldwide for delivering rapid fault protection, exceptional reliability and dependable performance in demanding power electronic applications.

● 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…

by | Aug 11, 2026 |

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

by | Jan 17, 2026 |

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

by | Jan 17, 2026 |

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...