Contact-making device for electrical conductors and pin contacts, • comprising an insulating body in which a contact chamber with a spring contact element which is arranged in the contact chamber, a sliding element and a contact receptacle are provided, • wherein the insulating body forms the housing of the contact-making device, • wherein the insulating body has a first opening and a second opening, characterized in that the first opening serves as an unlocking opening in order to release the contact-connection of a connected electrical conductor or pin contact, wherein the second opening serves as an insertion opening for inserting an electrical conductor or pin contact with which contact is to be made, • wherein the spring contact element has a free end and a fixed end, • wherein the free end is formed from at least two limbs, • wherein a first spring force limb bears against a side face of the contact chamber, • wherein a second contact limb projects in the contact chamber toward a side face which is situated opposite the side face, and forms a free, resilient length of the free end, • wherein the contact limb serves to make contact with an electrical conductor or pin contact which is to be inserted between the contact limb and the side face, • wherein a sliding element is arranged between the spring force limb and the side face, the spring force limb bearing against the said sliding element, and • wherein the sliding element can be displaced along the spring force limb, • wherein the contact receptacle receives the spring contact element, is mechanically connected to the said spring contact element and, together with the said spring contact element, is arranged in the contact chamber, • wherein the contact receptacle has, a contact region, wherein the said contact region is provided between the contact limb and the side face of the contact chamber, • wherein the sliding element can be moved to two maximum positions and also positions which are situated between the said maximum positions, • so that the free, resilient length of the free end of the spring contact element can be finely varied and can be extended from the contact limb to the spring force limb, and • that the contact limb makes contact with an inserted electrical conductor or pin contact in each position of the sliding element, and • that the sliding element has an operator which can be operated from outside the insulating body. • comprising an insulating body in which a contact chamber with a spring contact element which is arranged in the contact chamber, a sliding element and a contact receptacle are provided, • wherein the insulating body forms the housing of the contact-making device, • wherein the insulating body has a first opening and a second opening, • wherein the spring contact element has a free end and a fixed end, • wherein the free end is formed from at least two limbs, • wherein a first spring force limb bears against a side face of the contact chamber, • wherein a second contact limb projects in the contact chamber toward a side face which is situated opposite the side face, and forms a free, resilient length of the free end, • wherein the contact limb serves to make contact with an electrical conductor or pin contact which is to be inserted between the contact limb and the side face, • wherein a sliding element is arranged between the spring force limb and the side face, the spring force limb bearing against the said sliding element, and • wherein the sliding element can be displaced along the spring force limb, • wherein the contact receptacle receives the spring contact element, is mechanically connected to the said spring contact element and, together with the said spring contact element, is arranged in the contact chamber, • wherein the contact receptacle has, a contact region, wherein the said contact region is provided between the contact limb and the side face of the contact chamber, • wherein the sliding element can be moved to two maximum positions and also positions which are situated between the said maximum positions, • so that the free, resilient length of the free end of the spring contact element can be finely varied and can be extended from the contact limb to the spring force limb, and • that the contact limb makes contact with an inserted electrical conductor or pin contact in each position of the sliding element, and • that the sliding element has an operator which can be operated from outside the insulating body.