Integrated planar electromechanical contactors

An integrated power distribution assembly, comprising:

• a substrate having a plurality of through-holes formed through it;
• a plurality of electrical traces embedded within the substrate;
• and
• a plurality of electromechanical contactors integrated with the substrate, wherein each electromechanical contactor of the plurality of electromechanical contactors is associated with one of the plurality of through-holes and comprises:
• a plurality of solenoid traces embedded within the substrate the through-hole associated with the contactor in a plurality of distinct planes, wherein the plurality of distinct planes are substantially parallel to one another, and wherein each solenoid trace of the plurality of solenoid traces is in electrical communication with an adjacent solenoid trace through an electrical via, and wherein each respective plurality of solenoid traces form a helical conductive formation about an associated through-hole within the substrate;
• a solenoid core arranged in the through-hole associated with the contactor in electromagnetic communication with the plurality of solenoid traces;
• a mobile contact arm arranged on the solenoid core, wherein the mobile contact arm is configured to selectively connect an external contact lead arranged on the substrate to at least one electrical trace of the plurality of electrical traces embedded within the substrate responsive to motion of the solenoid core;
• and
• a heat spreader bar arranged on the solenoid core distally from the mobile contact arm configured to receive heat from the mobile contact arm.