49www.se.comDesign guideSelect the overload protectionPrecalculating XLPE or PVC cables + CanalisThe tables below determine, as a function of the type of overload protection (circuit breaker or fuse): bthe type of busbar trunking required bthe size of supply cables (in mm2) as a function of the installation method, for all conductor configurations.Protection by iC60 (curve C) modular circuit breakerType of busbar trunkingOperat. currentXLPE cablePVC cableSpacedTouching(number of cables)SpacedTouching(number of cables)Circuit-breaker rating (A)2 to 56 or more2 34 or more25 A KBA25 A KBB101.51.51.51.51.51.51.5161.51.51.51.52.52.52.5201.52.52.52.52.54425 A KBA25 A KBB252.5442.54462.5(1)2.5(1)40 A KBA40 A KBB32466466102.5(1)4(1)4(1)40461061010106(1) Protection by gG fusesType of busbar trunkingRated current(A)XLPE cablePVC cableSpacedTouching(number of cables)SpacedTouching(number of cables)2 to 56 or more2 34 or more25 A KBA25 A KBB101.51.51.51.51.51.51.5161.52.52.52.52.52.541.5 (1)202.52.52.52.54461.5 (1)25 A KBA25 A KBB252.54646664 (1)40 A KBA40 A KBB324666610102.5 (1)4 (1)(1) Permissible cable cross-sections for single-phase distribution. Cables spaced in cable trays. Cables touching in cable trays.E
Previous page: Prefabricerad kanalskena för belysning och [48 / 68]
Next page: Prefabricerad kanalskena för belysning och [50 / 68]
