Grace's Guide

British Industrial History

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South Wales Switchgear

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Installed in Sri Lanka (but not working in 2020)
Installed in Sri Lanka (but not working in 2020)
Name plate. Transformer Division.
September 1953. Electric Washboilers.
May 1969.
1988. Hawkgas.

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 the industrial electronics firm South Wales Switchgear, part of Aberdare Holdings.

1991 South Wales Switchgear was merged with Brush Switchgear to form Hawker Siddeley Switchgear Ltd (HSSL).

See Also


Sources of Information

  1. The Times, 10 May 1948
  2. The Times, 10 December 1954
  3. 1961 Dun and Bradstreet KBE
  4. The Times, 17 May 1961