Abstract
This paper presents the hardware development of a 1-kV, 500-A solid state circuit breaker (SSCB) based on the newly proposed T-type Modular Dc Circuit Breaker (T-Breaker) system. The novel T-Breaker is a paradigm shift from traditional solutions in that it integrates fault current management and transient compensation functions in one system. The demonstrated T-Breaker system has a modular structure with two SiC-based half bridge sub-modules on each arm. The prototype has been tested to be 99.58% efficient at 500 A and breaks up to 5 kA of fault current.