What was found
FLIGHT EXPERIENCED, ELECTRICAL DC ESS BUSS SHED ECAM MESSAGE ON TAKEOFF ROLL WHICH RESULTED IN THE CREW INITIATING A HIGH SPEED ABORT, 100-120 KNOTS AND RETURNED TO GATE. TECHS ACCOMPLISHED TROUBLESHOOTING IAW TSM 24-60-810-810A, CONTACTOR 8PH DC SHED ESS BUS WAS FOUND FAULTY. R & R 8PH CONTACTOR IAW AMM 24-62-55-000-001. NOT FURTHER ISSUES REPORTED ON SUBSEQUENT FLIGHTS.