7-pole 24V electrical coils are used for the electrical connection between a truck tractor and a semitrailer in the commercial vehicles sector. These products are supplied with a cable conforming to ISO 4141, with external sheath made of Polyurethane (TPU) and available only with small size 20mm turn diameter. The coils are available with plugs according to ISO 1185 for the normal connector and ISO 3731 for the supplementary connector, with plastic or aluminum body. All coils are available in several versions with working lengths between 3 and 4.5m. Coils with molded plugs complete the range with an advantage of water tightness and dustproof to IP65 Standards: Conforms to ISO 1185, ISO 3731 and ISO 4141 recommendations and standards. External sheath of Polyurethane (TPU) maintains elasticity even at low temperatures The coils are available with a rubber protection grommet The coils are available with plugs in aluminum or plastic body