Mayfield Group Investments Pty Ltd, together with its subsidiaries, engages in supplying electrical products and services for critical infrastructure and facilities in Australia. It designs, manufactures, and commissions transportable switchrooms and switchboards; constructs, repairs, and maintains medium and high voltage facilities and infrastructure; and manufactures protection and control systems for electrical power infrastructure. The company also provides, installs, and maintains critical electrical power and measurement instrumentation. It serves mining, infrastructure, process manufacturing, and renewable energy companies. The company was founded in 1936 and is based in Edinburgh, Australia.