The invention relates to a relay comprising a base element (27), a coil (1), a core element (3), an armature (10) and a contact system. The contact spring (16), which is arc-shaped, is configured and positioned in relation to the armature (10) in such a way that it is subjected to uniform, low mechanical stress. As a result a material can be used for the contact spring (16) which presents good electric conductivity, thus lowering the contact resistance of the relay. The contact spring (16) and armature (10) are arranged in such a way that a relay having a compact structure can be obtained.