Provided is a communication apparatus and a relay protection apparatus, the communication apparatus supports at least one of communication protocols and provides functions of at least two dedicated communication profile components for each of the communication protocols, and the communication apparatus comprises: a configuration module for setting an operational parameter of the communication apparatus, wherein the operational parameter indicates that which one of the at least two dedicated communication profile components is used for the communication apparatus; a management module for causing the communication apparatus to operate as the one of the at least two dedicated communication profile components according to the configuration of the configuration module; and a communication function module for providing the functions of the at least two dedicated communication profile components, wherein the management module causes the communication apparatus to operate as the one of the at least two dedicated communication profile components by selecting the function provided by the communication function module according to the configuration of the configuration module.