Abstract: An improved rigid dielectric barrier of the type utilized in molded-on female connectors for electrical power cords. The barrier has a plurality of passages which are adapted to allow insertion of appropriate prongs of a complementary male connector into contact with the corresponding female contact member. In a preferred embodiment of the invention the barrier is provided with protrusions adjacent to the edges of the passages which make contact with the inside surfaces of the female contact members. The close contact between the protrusions and the female contact members prevents molding compound from seeping into contact with the inside surfaces of the female contact members during the process of molding the connector.