About
Metrosil offers a wide range of products designed to provide surge protection for large-scale electrical equipment.
Our versatile products are relied upon by leading organisations globally in a variety of applications from protection of generator excitation systems, through to current transformer protection and relay protection.
Metrosil products are manufactured by M&I Materials at its headquarters in Manchester, UK. M&I Materials grew out of the research division of GEC Alstom and became an independently owned business in 1993.
M&I Materials is focused on developing specialist materials for industry and science and is the driving force behind a portfolio of successful brands including MIDEL®, Wolfmet® and Apiezon®.
M&I Materials is proud of the wide range of company and product awards, approvals and certifications that we have worked hard to achieve and maintain. Together, they assure you of the pedigree of our company, systems and products and demonstrate our commitment to achieving the highest standards.

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