Breakers are classified as simple switch models, which change branch resistance between two given values. They are controlled through an input control signal.
The ON and OFF resistances themselves cannot be changed dynamically during the run - only the state of the switch. Highly non-linear arc characteristics, which can occur in actual breakers, are not modeled in these components. Users are advised to build their own models or look for other breaker models if such characteristics are essential for a study.