Abstract: A miniaturized electromagnetic relay having a yoke-coil-armature-return spring assembly and contact bearing blades arranged to be inserted into an insulating monolithic supporting structure. The support structure is formed by a front wall and a partition wall perpendicularly projecting therefrom for separating the front wall into two portions, with one of said portions being effective to receive the yoke-coil-armature assembly and the related return spring, and the other portion being effective to receive the contact bearing blades.The partition wall is provided with a C-shaped cross-section having guiding and supporting means for said yoke-coil-armature assembly and related return spring. The upper portion of the front wall is provided with two sets of slots separated from one another by a partition member for receiving the contact bearing blades therein.