Schneider Electric TeSys D Series Control Relay Contactors CAD Series. Featuring a new design, the TeSys D series of contactors are simple and fast to set up in all automation applications. Compliant with international standards these relays maintain a compact size of 45 to 55mm (40 to 65A). Assuring a permanent tightening quality even in the event of conductor creep, all versions are equipped with EverLink which is a new patented technology. Each relay is also as standard 10A with 5 poles, suitable for AC or DC control. A version is also available with low consumption and built in suppression. What is EverLink technology? A removable terminal block, contactors and circuit-breakers can be linked without and accessory, vertically. On the same rail wiring can be connected in less than a minute. Reducing heat loss at connection points and without creep this technology provides quality wiring, continuity of service, fast assembly and reduced dimensions. Features and Benefits.