Mayfield Group Holdings Limited, together with its subsidiaries, provides electrical and telecommunications infrastructure products and services in Australia. It offers switchboards and transportable switch rooms for critical electrical infrastructure. The company also engages in the project management, engineering, design, manufacture, installation, and commissioning of electrical infrastructure. In addition, it provides electrical test and measurement instruments; generator, UPS, and battery products for critical power systems; and replacement, repair, and maintenance services. Further, the company manufactures protection systems and control panels for medium and high voltage systems, communication panels, and PLC and process control panels. The company was founded in 1936 and is based in Edinburgh, Australia.