smart distribution box: 1,Rating working current:AC 380V/220V~ 2,Rating Frequency:50HZ 3,Maximum input loading current:63A smart distribution box:1,Rating working current:AC 380V/220V~2,Rating Frequency:50HZ3,Maximum input loading current:63A4,Protection level of the housing:IP305,Applied standard:GB7251.3 HONYAR smart distribution box