R-Theta

R-Theta Thermal Solutions, Inc. is a front-line specialist in air cooling for power electronics. R-Theta Thermal Solutions is a front-line specialist in air cooling for power electronics in North America. With its wide range of innovative products, the company has experienced strong growth over several years.

Mersen ( Ferraz Shawmut ) acquired R-Theta Thermal Solutions in August 2008, which specialized in air cooling for power electronics. The acquisition strengthened Mersen’s position in the power electronics market, particularly in thermal management solutions.

Ferraz Shawmut has been a leader in circuit protection for industry and the electrical market for more than 100 years. With a complete line of current-limiting fuses and accessories, Ferraz Shawmut prides itself on delivering innovative, problem-solving products like the Thermally Protected Metal Oxide Varistor (TPMOV), the SmartSpot® open-fuse indicator, Amp-Trap 2000® fuses, ULTRASAFE(TM) fuse holders, Protistor® semiconductor fuses and Select-A-Fuse® software. Two of the company’s latest innovations are its new line of Amp-Trap® High-Speed Class J (HSJ) fuses, engineered specifically for the protection of today’s sensitive electronic motor controllers, and the industry’s first line of Finger-Safe Power Distribution Blocks (FSPDBs), delivering the ultimate in safety and ease-of-use when making power connections in electrical panels. Ferraz Shawmut, Inc. is a subsidiary of the Carbone Lorraine Groupe.
Starting December 1, 2011, all products shipped from Mersen manufacturing sites are packaged in eco-friendly, natural brown boxes labeled with the Mersen brand name. Boxes also have a second label that states, “Eldre is Mersen,” “Ferraz Shawmut is Mersen,” “m.schneider is Mersen,” or “R-Theta is Mersen,” depending on the manufacturing plant.