In　view　of　the　problem　that　the　arc　burning　is　difficult　to　maintain　and　the　arc　time　is　difficult　to　meet　the　test　standard　of　fault　arc　circuit　breaker　when　the　test　current　is　low.　To　solve　this　problem,　a　closed-loop　fuzzy　control　strategy　based　on　electromechanical　coupling　is　presented.　The　fuzzy　controller　is　designed　according　to　the　arc　voltage　and　arc　gap　feedback.　The　effectiveness　of　this　control　strategy　has　been　verified　by　a　range　of　experimental　tests　including　not　only　the　resistive　load,　but　also　the　nonlinear　load　such　as　switching　power　supply.　The　test　success　rate　under　resistive　load　is　100%　and　95%　under　switching　power　supply　load.　It　provides　technical　support　for　improving　the　performance　of　the　arc　fault　protection　electrical　test　system,　increasing　the　test　success　rate　and　efficiency　of　the　arc　fault　circuit　breaker　test.　©　2022,　The　Author(s),　under　exclusive　license　to　Springer　Nature　Singapore　Pte　Ltd.