Abstract: A hybrid modular electrical connector system comprised of a family of interlocking modules used to produce custom dedicated, hybrid electrical connectors for power distribution and signal circuit interconnections between printed circuit boards. A dedicated hybrid electrical connector for printed circuit boards can be built up from any number of power connector modules, signal connector modules, spacer modules, and mounting flange modules. With this family of interlocking modules, a custom hybrid electrical connector can be produced with uniform off-the-shelf parts. Once the modules are locked together they form a rigid assembly that functions the same as a unitary molded dedicated connector. In addition only female type modules are produced which can be converted to male type modules by simply inserting electrically conductive adapters into the female modules.