In addition to the covers, optional accessories in various materials and coatings are available to supplement the cable support system, e. gutter connectors, connecting plates, separating strips and protective rings. Catalogue for. DKC is a European leader, and offers a comprehensive range of cable tray systems and energy protection, transport and distribution solutions for civil and industrial infrastructures. A functional cable tray system consists of various clamping, supporting, and splicing accessories in order to. These are cable management systems composed of trays, mounting support systems, direction changing parts, connection parts and fittings with the purpose of carrying and fixing cables safely in the electrical installations.