Ferraz Shawmut

Ferraz ShawmutFerraz Shawmut, now known as Mersen, is a global leader in electrical protection solutions, offering a range of products including fuses, fuse holders, fuse blocks, switches, surge protection devices, and related accessories, designed for safety and reliability.

General Purpose Fuses for UL LV Power Distribution

Ferraz Shawmut’s UL LV fuses provide comprehensive protection for North American applications. The Amp-Trap 2000 fuses open in less than one cycle during short circuits, limiting damage and meeting stringent IEC Type-2 standards. The SmartSpot visual indicator makes detecting blown fuses quick and efficient.

General Purpose Fuses for IEC LV Power Distribution

As a global supplier, Ferraz Shawmut provides European and North American fuses and accessories, including the Modulostar, Lindner, and Blue Dot brands, adhering to NF, DIN, and BS88 standards. These products are designed for compact, reliable, and easy installation, offering superior short-circuit protection.

Miniature Fuses for Low Power Electronics

Ferraz Shawmut’s miniature fuses, designed for low power electronics, offer glass-type and high-capacity ceramic fuses in popular sizes like 5×20 mm and 6.3×32 mm, ensuring effective protection for various applications.

Semiconductor (AC) Fuses for Power Electronics

Renowned for power electronics fuses, Ferraz Shawmut’s Protistor series offers unmatched current limitation and low I2t levels, ensuring optimal protection for semiconductors. The product line includes North American and European fuses for large current ratings, supported by robust design, manufacturing, and technical expertise.

Protistor Fuses for DC Circuits

Ferraz Shawmut specializes in DC circuit protection with its Protistor fuses, widely used in traction and DC motor applications. These fuses, available in ferrule and square-body designs, are supported by extensive high-power testing capabilities.

Medium Voltage Fuses for Power Distribution Grids

With years of experience in medium voltage protection, Ferraz Shawmut provides solutions for MV/LV transformer protection and industrial motor protection, including Limitor fuses for overhead lines and oil-tight fuses for transformer tanks. Their range also includes protection for potential transformers and capacitors.

Special Purpose Fuses

Ferraz Shawmut offers a variety of special-purpose fuses, tailored for specific applications like residential use, forklifts, telecom, and power generators, ensuring top performance under unique conditions.

Gear & Fuse Gear

Ferraz Shawmut’s extensive fuse line is complemented by a range of fuse gear, including UltraSafe holders and power distribution blocks. For IEC LV fuses, the Modulostar and Lindner lines offer comprehensive solutions for fuse holders, disconnectors, and switch-disconnectors.

In June 2010, Ferraz Shawmut rebranded as Mersen, continuing to manufacture a wide array of circuit protection solutions, including general-purpose and power fuses, semiconductor and medium voltage fuses, and high-power switches.