Call Us Today
01706 242050
Trade Portal
MERSEN FUSE A 070 URD 30 KI 0400 A070URD30KI0400

MERSEN FUSE A 070 URD 30 KI 0400 A070URD30KI0400

High-speed aR fuse with striker indication, rated 400A at 690VAC IEC and 700VAC UL, designed for semiconductor protection in industrial applications.

SKU: L300137Alt SKU: A070UD30KI400MPN: L300137
Price
List Price £140.22 ex VAT
Your Price (ex VAT)
£140.22
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) £140.22
Trade pricing is personalised to your account

Manufacturer Lead Time

Sold in packs of 3

£140.22

Why Choose the Mersen L300137 Industrial Electrical Component?

The Mersen L300137 is a genuine Mersen industrial electrical component supplied under the exact manufacturer reference L300137. It is intended for use with compatible electrical equipment and provides a practical replacement option for maintenance engineers, panel builders, service technicians and original equipment manufacturers.

Selecting a component by its precise manufacturer part number helps support accurate procurement and reduces the risk of ordering an unsuitable alternative. The Mersen L300137 is suitable for planned maintenance, equipment servicing, refurbishment and breakdown replacement where the existing installation specifies this exact Mersen reference.

Before ordering or installation, the component should be checked against the identification shown on the existing part and the relevant equipment documentation. Electrical characteristics, physical dimensions, terminal arrangements and application compatibility must be confirmed by a suitably qualified electrical professional.

Key Advantages

  • Genuine Mersen industrial electrical component.
  • Clearly identified by the L300137 manufacturer part number.
  • Suitable for planned maintenance and breakdown replacement.
  • Supports accurate identification and procurement of spare parts.
  • Applicable to compatible industrial and commercial equipment.
  • Suitable for engineers, panel builders and OEM maintenance teams.

Key Features

  • Mersen branded electrical component.
  • Manufacturer reference: L300137.
  • Designed for use with compatible electrical equipment and assemblies.
  • Suitable for replacing an existing component carrying the same reference.
  • Exact part identification supports efficient maintenance planning.
  • Appropriate for equipment servicing, refurbishment and OEM applications.
  • Intended for professional industrial electrical installations.
  • Requires selection and installation by suitably qualified personnel.

Accurate Component Selection for Industrial Maintenance

Industrial electrical systems depend on correctly specified components to maintain safe and dependable operation. Matching the manufacturer name and exact part number helps maintenance teams identify the required replacement accurately, streamline purchasing and minimise delays caused by incompatible components.

The Mersen L300137 can support preventative maintenance, urgent repairs and equipment refurbishment. Before installation, the electrical supply must be safely isolated and all relevant ratings, connections, dimensions and equipment-specific requirements must be verified in accordance with applicable electrical safety procedures.

Typical Applications

  • Industrial electrical control panels.
  • Power distribution and control equipment.
  • Manufacturing and processing machinery.
  • Commercial electrical installations.
  • OEM equipment assembly and servicing.
  • Maintenance, repair and refurbishment projects.

Technical Specifications

Item number L300137
Catalogue No A070UD30KI400
Description Square Body High-Speed Fuse Protistor® Size 30 aR 690VAC IEC 700VAC UL 400A With Striker Slotted Blades short
EAN/UPC Code 3605340323825
Rated voltage AC UL 700 V
Rated voltage AC IEC 690 V
Ampere Rating 400 A
RoHS Compliant Yes
AC or DC AC
Speed/Characteristic aR
Fuse Size 30
Mounting Bolted
Clearing I2t At Rated Voltage 130 kA²s
Melting I2t 23 kA²s
AC Max I.R./Breaking Capacity I1: 200 kA
Indication System Yes
Indication System Type Striker
Connection/Terminal Material Silver-Plated Copper
Connection/Terminal Type Slotted Blades
Product Width 40 mm
Product Length 129 mm
Product Height 48 mm
Sell Pack Quantity 3 EA
Sell Pack Weight 0.873 kg
Sell Pack Width 133 mm
Sell Pack Length 157 mm
Sell Pack Height 54 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 0.291 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 L300137?

The Mersen L300137 is an industrial electrical component identified by the exact manufacturer reference L300137 for use with compatible electrical equipment.

How can I confirm that the Mersen L300137 is compatible?

Compare the manufacturer reference, electrical characteristics, dimensions and connection requirements with the existing component and the relevant equipment documentation before ordering.

Can the L300137 be used as a replacement component?

It may be used as a replacement where the equipment specification requires Mersen part L300137. Complete compatibility must be verified before installation.

Who should install the Mersen L300137?

The component should be selected and installed by a suitably qualified electrical engineer or technician following applicable safety procedures and regulations.

Where is the Mersen L300137 typically installed?

It is intended for compatible industrial or commercial electrical equipment, including control panels, machinery and power distribution assemblies.

Trusted Electrical Expertise from Mersen

Mersen electrical components are selected by engineers, panel builders, equipment manufacturers and maintenance professionals for applications where accurate component identification and dependable electrical performance are essential.

● 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...