Mersen medium voltage IEEE fuses

Mersen Medium Voltage IEEE Fuses

 

Medium voltage controllable fuses are a modern innovation providing a cost-effective solution to mitigate the Arc-Flash hazard to the low-voltage side of a medium voltage transformer.

How does the Intelligent Fuse System Work?

The Mersen A155CNF Series operates like a normal MV fuse under short circuit and overload situations. When connected to an Arc-Flash detection system that is properly set up, the MVCF will open the circuit in time to limit the Hazard to Category 2 PPE. The Mersen MVCF System’s Interface Module (CFIM) is mounted in the Low Voltage area and accepts a trip signal from the customer’s existing Arc-Flash detection relay. The CFIM immediately sends a signal over fiber-optic cables to the Actuator Modules (CFAM) attached to the bottoms of the fuses in the Medium Voltage cabinet. The CFAM then causes a switch within the fuse to open. This shunts the current through a much smaller fuse element that opens the circuit in a controlled manner.

Features:

–          Fuses fit into existing clips and space – The retrofit can be completed in minutes, provided fiber optic cable is already in place.

–          Lowest-cost Arc-Flash Mitigation Solution – A turnkey installation of the MVCF will cost a fraction of other available alternatives

–          Exceptional Performance – 50kA short circuit interrupt rating

–          Fast response time mitigates the arc-flash energy to Category 2 PPE

–          Low Maintenance – Fuses are designed to last 20 years with no maintenance intervals, and the battery lasts for 3 years

–          Flexible Design Interface – Designed to be used with a variety of conventional Arc-Flash detection devices and relays

–          Minimal stress on other devices – The fuse element softens the voltage spike that occurs when opening. Alternatives may generate an excessive spike that could damage transformer insulation or upstream devices

–          Small Back-up Power Cells – The MVCF utilizes small batteries that fit inside the Controllable Fuse Actuator Module (CFAM) versus other solutions requiring multiple lead-acid car batteries

For more information:

http://ep-us.mersen.com/products/catalog/line/medium-voltage-controllable-fuse/

Related Articles

Latest Articles

  • Industrial Construction Intentions Drive Increase in Non-Residential Sector in January

    Industrial Construction Intentions Drive Increase in Non-Residential Sector in January

    March 13, 2026 In January, the total value of building permits issued in Canada increased $607.0 million (+4.8%) to $13.3 billion. The increase was led by the non-residential sector (+$464.0 million) and supported by the residential sector (+$143.0 million). On a constant dollar basis (2023=100), the total value of building permits issued in January rose 4.3% from the previous month Read More…

  • Multi-Unit Construction Drives Growth in December Residential Construction Investment, 2025 Review

    Multi-Unit Construction Drives Growth in December Residential Construction Investment, 2025 Review

    March 13, 2026 The total value of investment in building construction increased $442.9 million (+1.9%) to $23.7 billion in December. The residential sector grew 2.4%, while the non-residential sector edged up 0.6%. Year over year, investment in building construction grew 12.2% in December. On a constant dollar basis (2023=100), the total value of investment in building construction in December rose 1.7% Read More…

  • 5 Strategic Reasons to Attend the Lumen Exhibition

    5 Strategic Reasons to Attend the Lumen Exhibition

    March 13, 2026 In a market where deadlines are tight and projects are increasingly complex, staying competitive is no longer just about technical skills. It also depends on having the right tools, the right information, and the right partners by your side. The Lumen Exhibition is more than just an event—it’s a strategic lever designed to Read More…

  • BCCA Official Statement on Construction Projects Procurement Act

    BCCA Official Statement on Construction Projects Procurement Act

    March 13, 2026 On March 5, 2026, Kiel Giddens, MLA for Prince George – Mackenzie and Critic for Labour, introduced the Construction Projects Procurement Act, a Private Member’s Bill aimed at restoring fair and open procurement on public construction projects in British Columbia. BCCA has a long history of advocating for fair and open public procurement. Read More…

Changing Scene

  • Nova Scotia Strengthens Housing Legislation to Accelerate Supply

    Nova Scotia Strengthens Housing Legislation to Accelerate Supply

    March 13, 2026 Amendments to existing legislation will mean more housing, improved efficiency in the sector and better alignment of related agencies. The changes extend the Executive Panel on Housing in the Halifax Regional Municipality and give the Minister of Housing new authority to ensure housing projects aren’t delayed. “We are strengthening how we plan, Read More…

  • Sonepar Company Opens a New Automated Distribution Center in Las Vegas

    Sonepar Company Opens a New Automated Distribution Center in Las Vegas

    March 13, 2026 Codale Electric Supply, a Sonepar company, is transforming electrical distribution with the launch of its central distribution center located just off the Las Vegas Strip, in October 2025. The site features a highly automated setup designed to improve speed, accuracy, and customer convenience. At the heart of the facility is an advanced Read More…

  • BC Introduces Public Sector Construction Projects Procurement Act

    BC Introduces Public Sector Construction Projects Procurement Act

    March 13, 2026 Kiel Giddens, MLA for Prince George-Mackenzie and Critic for Labour, has introduced the Public Sector Construction Projects Procurement Act, legislation aimed at ensuring publicly funded construction contracts are awarded through labour-neutral, merit-based procurement. “Here’s the simple question: if labour shortages are driving cost overruns, why would government limit who can work on public projects?” Read More…

  • KPMG Establishes Major Products Delivery Office

    KPMG Establishes Major Products Delivery Office

    March 13, 2026 KMPG: Complex projects require well-structured teams, appropriate delivery models tailored to the project’s needs, robust governance frameworks, and stable execution environments: KPMG Canada Canada is entering a defining era of major project development that has significant implications for the nation’s economic future, as the country works to establish new trade partnerships, develop its resources, reinforce Read More…