Find out more about Metrosil surge protection with our technical data sheets, product brochures, care guide and application sheets.

Click here for Frequently Asked Questions about Metrosil


Disc Introduction

Metrosil Care of Units

High Energy Test Laboratory

Excitation Applications

8000 Series Product Overview

Metrosil Excitation (Chinese)

Metrosil Current Transformer Protection Units

Metrosil Enclosures Product Overview

Metrosil Enclosures Product Brochure

Relay Protection Applications


Electro-Magnet Applications


Metrosil MIMOX SVL

Metrosil VSD


History of M&I Materials


Frequently Asked Questions

A: M&I Materials Limited is a strong global business that specialises in materials for industry and science. Please see
A: Please contact our expert sales team and they will endeavour to answer all your questions.
Tel: +44 (0)161 864 5456 or Email:
A: No, currently Metrosil is not available to buy online.
A: Normally approx 4-6 weeks. We always endeavour to satisfy customer requirements.
A: Metrosil is the brand name for silicon carbide based non-linear resistors manufactured by M&I Materials Limited.
A: Testing of Metrosils is complex and may require expensive equipment. Generally, a visual inspection will suffice to establish that the unit is not damaged. The electrical characteristics during the normal use of Metrosil are very stable from the time of manufacture until the end of the life of the protected equipment.
A: Metrosil is RoHS compliant; units are manufactured using lead-free solders.
A: For guidance on how to store, handle, inspect (prior to Installation) and maintain Metrosil units please click here.

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