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High Power Switching, Protection, and Control Products

Engineered to Meet Your Needs


High Power Switches are necessary and critical to your operation. Not only do they help protect your people from injury, they help protect your equipment and processes, and minimize the risk of costly downtime and repairs.

For more than 100 years, Mersen has provided the market with safe, reliable and longer life on-load switches and off-load disconnectors. These devices offer high performance, robust operation for heavy duty requirements with very limited maintenance. Mersen offers one of the largest product ranges and is the worldwide leader in the market. Mersen has the switch solution that will meet your unique needs.


Our standard High Power Switches are rigorously engineered to meet your technical specifications. Mersen’s High Power Switches encompass different ranges of proven technologies (Flohe-Fouilleret, Soule, Berg, Hundt & Weber, and Lenoir Elec) that gives us worldwide recognized expertise in Switching and Disconnecting. This expertise includes a wide range of DC and AC switches and disconnectors designed to handle high current and medium voltage applications. Our offerings include rectifier output switches, disconnect switches in both AC and DC, transfer switches for AC and DC, cell switches and medium voltages AC switches, and AC earthing switches. For more information, see our capabilities brochure:

Application Guide

Innovative High Power Switch systems and assemblies are custom made. When you need more than just a switch, Mersen’s world-class engineering team is ready to provide custom engineering and fabrication to build the High Power Switch system or assembly you need, exactly the way you need it. Mersen’s team of design engineers are bold problem-solvers who enjoy meeting your High Power Switch challenges head on with innovative engineering and creative solutions. Our engineers incorporate design and construction features that ensure each switch performs reliably, whether it’s a rectifier output switch operated once a year or a change-over switch system in an enclosed panel actuated dozens of times a day.  

Let us know what your requirements are, and we will help you find a solution, using our product questionnaires below:


Extended Services & Solutions

If you have your product or equipment needs a design change, or is being used for different applications, our technical team will help determine if the switching and protection system needs to be changed as well. We offer technical support through our product lifecycle and yours.   

Mersen has built switching and protection systems for hundreds of users, and supports the product with maintenance, timely shipping and replacement parts so that your critical loads stay online.