Type:VacuumPoles 3Rated current:630A 1250A ; 630A 1600AAmbient Temp.:-15℃~40 ℃Application:Circuit-breakingMechanical Life:10000 TimesRated frequency:50 HzCertificate:ISO9001Rated short circuit-breaking current:20KA 25KA ; 31.5KARated voltage:12KVMaterial:CopperStandard:IEC60898