International cable and fuse sizes—380 Vac to 440 Vac ratings
Amp
Frame size
suffix
FR0
3D3
4D3
5D6
7D6
FR1
3D3
4D3
5D6
7D6
9D0
012
FR2
016
023
031
FR3
038
046
061
FR4
072
087
105
FR5
140
170
205
FR6
261
310
Notes
Line and motor cable size is selected according to IEC 60364-5-52:2009 Table B.52.4 for copper conductor with PVC insulation with a wiring condition of ambient temperature 30 °C in air and an installation
method of "B2" (cables in conduit and cable trunking systems). For other wiring conditions, please refer to the standard of IEC 60364-5-52:2009 for suitable cable sizes.
Earthing conductor size is determined by the cross-sectional area of phase conductors according to IEC/EN 61800-5-1:2007 Table 5. So if phase conductor size is changed, earthing conductor size should also be
changed accordingly.
If power cubes or bypass are used, a Class gG/gL fuse is recommended.