South Wales Switchgear
South Wales Switchgear, makers of electrical switchgear, of Treforest and Blackwood, Monmouthshire.
South Wales Switchgear led the way in exploiting SF6 gas as a medium of interruption and insulation. Traditionally, South Wales Switchgear were involved in the design and manufacture of 11kV – 33kV switchgear and DC type switchgear for naval projects.
1941 Established as a subsidiary of Aberdare Cables; incorporated[1].
1941 Private company.
1954 Aberdare Cables (Holdings) bought out the minority shareholders in South Wales Switchgear and Aberdare Engineering [2].
1961 Manufacturers of electrical switchgear and power transformers. 2,000 employees. [3]
1961 Incorporated Treforest Electrical Services which specialised in low voltage switchgear[4].
1973 Hawker Siddeley acquired South Wales Switchgear as part of Aberdare Holdings.[5]
1991 South Wales Switchgear was merged with Brush Switchgear to form Hawker Siddeley Switchgear Ltd (HSSL).