MERSEN FUSE 670C3 BTLM42V670

MERSEN FUSE 670C3 BTLM42V670

The BTLM42V670 fuse-link delivers dependable circuit protection in demanding industrial and commercial power applications, supporting up to 670A at 415VAC or 240VDC. Fully compliant with IEC and BS88 standards, it ensures maximum safety and reliable operation in critical systems.

SKU: BTLM42V670Alt SKU: BTLM42V670MPN: N226332
Price
List Price £232.27 ex VAT
Your Price (ex VAT)
£232.27
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) £232.27
Trade pricing is personalised to your account

Manufacturer Lead Time

£232.27

Why Choose the Mersen BTLM42V670 Industrial Fuse Link?

The Mersen BTLM42V670 is a high-current industrial fuse link designed to protect low-voltage electrical circuits against excessive current. Manufactured by Mersen, it helps safeguard cables, busbars, switchgear and connected equipment by disconnecting the protected circuit during overload or short-circuit conditions.

Designed for demanding industrial power distribution applications, the BTLM42V670 provides dependable fault interruption where electrical reliability and equipment protection are essential. Its current-limiting operation can help restrict the peak current and electrical energy passing through downstream components during a serious electrical fault.

With a rated current of 670 A and a voltage rating of up to 415 V AC, the BTLM42V670 is suitable for high-capacity switchboards, distribution systems, industrial machinery supplies and feeder circuits. It should be installed in compatible fuse equipment selected for the product’s electrical rating and physical configuration.

Key Advantages

  • Dependable protection for high-current industrial circuits.
  • 670 A rated current for heavy-duty distribution applications.
  • 415 V AC rating for low-voltage electrical systems.
  • Helps protect cables, busbars, switchgear and connected equipment.
  • Current-limiting operation can reduce damaging fault energy.
  • Suitable for compatible industrial fuse and switching equipment.

Key Features

  • Mersen BTLM industrial fuse-link range.
  • 670 A rated current.
  • 415 V AC rated voltage.
  • Designed for overload and short-circuit protection.
  • Current-limiting fault interruption.
  • Suitable for high-capacity industrial distribution systems.
  • Compatible with correctly rated fuse holders and switching equipment.
  • Designed for dependable operation in demanding electrical installations.

Reliable Protection for High-Current Electrical Systems

The Mersen BTLM42V670 is designed to disconnect a protected circuit when the current exceeds safe operating limits. This helps prevent excessive heating and reduces the risk of damage to conductors, busbars, switchgear, machinery and other connected electrical equipment.

During a high-level electrical fault, the fuse can limit the peak current and total energy passing through the protected circuit. Correct selection and coordination with the associated fuse holder, switching device and downstream equipment are essential for safe and reliable operation.

Typical Applications

  • High-current industrial power distribution systems.
  • Main electrical switchboards and distribution panels.
  • Busbar, cable and feeder circuit protection.
  • Industrial machinery and manufacturing equipment.
  • Compatible fuse switches and switch-disconnectors.
  • Commercial and industrial electrical installations.

Technical Specifications

Item number N226332
Catalogue No BTLM42V670
Description British Standard fuse-link IEC BS88 gG Type C3 415VAC 240VDC 670A BTLM Central Bolted Tag
EAN/UPC Code 3605340268096
Rated voltage AC IEC 415 V
Rated voltage DC IEC 240 V
Ampere Rating 670 A
RoHS Compliant Yes
AC or DC AC/DC
Speed/Characteristic gG
Fuse Size C3
Mounting Bolted
Clearing I2t At Rated Voltage 5460000 A²s
Melting I2t 1950000 A²s
AC Max I.R./Breaking Capacity I1: 80 kA
Max. Rated Breaking Capacity DC 40 kA
Connection/Terminal Material Tin-Plated Copper
Connection/Terminal Type Central Bolted Tag
Product Diameter 82.4 mm
Product Length 212 mm
Sell Pack Quantity 1 EA
Sell Pack Weight 1.36 kg
Sell Pack Width 75 mm
Sell Pack Length 235 mm
Sell Pack Height 75 mm
Product group Low Voltage IEC Fuses
Body/Insulating Material Ceramic
Product Weight 1.36 kg
Power Dissipation at Rated Current Value 60 W
HS Code 85361090
Country of Manufacture India
Fuse Class gG
Voltage 415 V

Frequently Asked Questions

What is the Mersen BTLM42V670 used for?

The BTLM42V670 is used to protect high-current industrial electrical circuits, cables, busbars, switchgear and connected equipment against excessive current caused by overloads or short circuits.

What is the current rating of the BTLM42V670?

The Mersen BTLM42V670 has a rated current of 670 A.

What voltage is the BTLM42V670 rated for?

The fuse link is intended for low-voltage electrical systems operating at up to 415 V AC.

How does the BTLM42V670 protect electrical equipment?

The fuse interrupts excessive current and limits the electrical energy passing through the protected circuit during an overload or short-circuit condition.

Where is the BTLM42V670 typically installed?

The BTLM42V670 is typically installed in compatible industrial fuse holders or fused switching equipment within a high-current power distribution system.

Trusted for Industrial Power Protection

Mersen fuse links are widely specified by electrical engineers, panel builders and maintenance professionals for dependable protection and reliable performance in demanding industrial electrical installations.

● 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...