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35℃andaveragenomorethan24h+(specialordersexcept)。●thealtitudedoesnotexceed2000minstallationsite。●whenthemaximumtemperatureof40℃around,airrelativehumidityisnotmorethannstalledinaccordancewiththerequirementsofthismanualintheverticalslopeofthecircuitbreaklcategoryiv,therestrolcircuitforⅲinstallationcategory。●pollutionlevelsforlevel3。●circuitbreakergenerallyadoptopeninstallation,protectiongradecanachieveip30;circuitbreakerinstalledinthecabinetputoneselfinanother'ssmallindoor,addingframe,protectiongradecanachieveip40;installedinthecabinetputoneselfinanother'ssmallindoorandmountedtotheframeandthetransparentcover,protectiongradecanreachip54。

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