• Our registration to BS EN 9001 (2000) is your assurance that quality will be maintained from start to finish.
  • Our continued commitment to quality enables Twyver Switchgear to achieve the highest level of customer satisfaction.
  • In order to ensure high standards of work, we only use our own directly employed labour.

Quality Assurance

Manufacture throughout our factory is ‘Quality Controlled’ in accordance with BS EN ISO 9001 (2000) for which we have been independently assessed and are audited on a regular basis.


Bus bar Systems up to 4,000 Amperes are available which provide for various fault level requirements. ASTA certificates are available for numerous sizes and combinations of Busbars with fault ratings including 50kA for 1 or 3 seconds and 80 kA for 1 second to BS5486 (BS EN 60439-1). Our bus bar systems utilise glass reinforced polyester DMC supports having high arc resistance and reduced flammability.

We are certified to the latest BS EN 61439 standards.