Call Us Today
01706 242050
Trade Portal
MERSEN FUSE 6,9 URD 31 TT F 0315 6,9URD31TTF0315

MERSEN FUSE 6,9 URD 31 TT F 0315 6,9URD31TTF0315

High-speed fuse providing reliable protection for sensitive power electronic devices up to 690VAC (IEC) and 700VAC (UL) with a rated current of 315A. Features flush-end striker for indication and robust ceramic body.

SKU: Q300003Alt SKU: PC31UD69V315TFMPN: Q300003
Price
List Price £119.63 ex VAT
Your Price (ex VAT)
£119.63
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) £119.63
Trade pricing is personalised to your account

Manufacturer Lead Time

Sold in packs of 3

£119.63

Why Choose the Mersen Q300003 Electrical Protection Component?

The Mersen Q300003 is a genuine Mersen industrial electrical protection component intended for use with compatible fuse, power distribution and circuit protection equipment. Its distinct manufacturer reference enables engineers, panel builders and maintenance teams to identify the required component accurately when completing repairs, servicing established installations or sourcing replacement parts.

Mersen develops specialist electrical protection products for industrial machinery, control panels, power conversion equipment and electrical distribution systems. Choosing an original Mersen component helps preserve equipment compatibility, installation integrity and reliable system performance in demanding industrial environments.

The Mersen Q300003 is suitable for installations in which this exact manufacturer part number is specified. Product configuration and electrical requirements may vary between systems, so compatibility, dimensions, ratings and mounting details should be checked against the original component, equipment manual or approved Mersen documentation before ordering.

Key Advantages

  • Genuine Mersen electrical protection component.
  • Q300003 manufacturer reference supports accurate product identification.
  • Suitable for planned maintenance, equipment repairs and replacement projects.
  • Designed for use with compatible industrial electrical equipment.
  • Helps maintain the integrity and reliability of established installations.
  • Suitable for engineers, panel builders, OEMs and maintenance departments.

Key Features

  • Mersen manufactured component.
  • Manufacturer part number: Q300003.
  • Developed for professional industrial electrical applications.
  • Suitable for compatible Mersen equipment where specified.
  • Supports accurate component traceability and maintenance records.
  • Industrial-grade construction for dependable service.
  • Suitable for electrical panels, machinery and power distribution assemblies where approved.
  • Supplied as an individual replacement component unless otherwise stated.

Dependable Support for Industrial Electrical Systems

Correctly specified electrical protection components are essential for maintaining safe and dependable operation across machinery, control panels and power distribution systems. Selecting a replacement with the correct manufacturer reference helps reduce the risk of compatibility problems, installation delays and avoidable equipment downtime.

The Mersen Q300003 provides a traceable replacement option for compatible installations. Engineers should compare the product reference with the existing component, equipment drawings, maintenance records and approved parts list before installation or energisation.

Typical Applications

  • Industrial electrical control panels.
  • Fuse and circuit protection assemblies.
  • Power distribution equipment.
  • Industrial machinery maintenance.
  • Manufacturing and processing systems.
  • Maintenance, repair and operations inventory.

Technical Specifications

Item number Q300003
Catalogue No PC31UD69V315TF
Description Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 315A With Striker Flush ends metric threads
EAN/UPC Code 3605340322279
Rated voltage AC UL 700 V
Rated voltage AC IEC 690 V
Ampere Rating 315 A
RoHS Compliant Yes
AC or DC AC
Speed/Characteristic aR
Fuse Size 31
Mounting Bolted
Clearing I2t At Rated Voltage 44000 A²s
Melting I2t 7500 A²s
AC Max I.R./Breaking Capacity I1: 200 kA
Indication System Yes
Indication System Type Striker
Connection/Terminal Material Silver-Plated Brass
Connection/Terminal Type Flush ends
Product Width 51 mm
Product Length 50.6 mm
Product Height 56.5 mm
Sell Pack Quantity 3 EA
Sell Pack Weight 1.1478 kg
Sell Pack Width 85 mm
Sell Pack Length 168 mm
Sell Pack Height 65 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 0.3826 kg
Power Dissipation at Rated Current Value 65 W
HS Code 85361090
Country of Manufacture France
Fuse Type Semiconductor
Fuse Class aR
Voltage 690 V

Frequently Asked Questions

What is the Mersen Q300003?

The Mersen Q300003 is an industrial electrical protection component identified by the manufacturer part number Q300003.

What is the Mersen Q300003 used for?

It is intended for maintenance or replacement within compatible industrial electrical protection, fuse or power distribution equipment.

How can I confirm that the Q300003 is compatible?

Compare the Q300003 reference with the number shown on the existing component, equipment manual, electrical drawings or approved replacement parts list.

Should the specifications be checked before installation?

Yes. The electrical ratings, dimensions, mounting arrangement and equipment compatibility should be confirmed before installation or energisation.

Who should install the Mersen Q300003?

Installation should be completed by a suitably qualified electrical engineer or technician in accordance with the equipment instructions and applicable electrical regulations.

Trusted Electrical Protection from Mersen

Mersen electrical protection products are used by panel builders, equipment manufacturers and industrial maintenance teams to support reliable power distribution, machinery protection and long-term electrical system performance.

● 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...