The　core　component　of　the　energy　router　is　dual　active　bridge　(DAB)　DC　transformer,　for　its　short　circuit　fault　current　rise　rate　is　fast,　the　peak　value　is　large,　resulting　in　the　DAB　internal　power　electronic　device　blocking　problem,　this　paper　proposes　a　current-limiting　type　structure　of　the　energy　router　with　current-limiting　type　structure,　the　structure　of　current-limiting　device　from　the　high-voltage　side　of　the　H-bridge　of　the　DAB　connected　to　a　single-phase　rectifier　bridge,　and　then　connected　with　the　current-limiting　inductor　at　the　output　port.　When　a　short-circuit　fault　occurs　on　the　output　DC　side,　the　current-limiting　energy　router　uses　a　model　predictive　control　strategy　to　rectify　the　current,　provide　clamping　voltage　for　the　current-limiting　inductor　to　limit　the　peak　value　of　the　fault　current,　and　cooperate　with　the　circuit　breaker　to　realize　the　arc-free　opening,　which　avoids　blocking　of　the　power　electronic　devices　in　the　DAB,　and　quickly　realizes　the　current　limiting　and　isolation　of　the　fault.　The　model　of　current-limiting　energy　router　based　on　10kV/750V　DC　transformer　is　constructed　in　the　simulation　system,　and　the　simulation　results　show　the　effectiveness　and　feasibility　of　current-limiting　energy　router　fault　current　limiting　and　isolation.　©　2023　IEEE.