The CCS charging standard is the most widely used variant for charging electric vehicles in Europe. The further development of the charging components enables charging capacities to be achieved that reach the limits of the CCS standard. One way to increase the effective charging power is to reduce charging losses. In this work, three different approaches to optimising the CCS charging inlet are presented using a specially developed thermal Matlab/Simscape simulation. Comparisons of the thermal test results from the current CCS inlet and the version with optimisation approaches show slower heating. This means less heat loss during charging and offers the possibility of charging with a higher current over a longer period of time before the permissible limit temperature is reached. In addition, the savings potential due to the reduced heat generation from the CCS charging inlet is analysed and the reductions in charging time are derived.