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Multiple mains fuses Multiple mains fuses are required if the total input current of all drives
connected via the common DC bus exceeds the maximum fuse rating
shown in the table below.
Multiple mains fuses Maximum fuse rating
LXM32∙∙∙∙M2 A 25
If multiple mains fuses are required, additional DC bus fuses must be
used upstream of each drive. The DC bus fuses must be suitable for
600 Vdc.
DC bus fuses Maximum fuse rating
LXM32∙∙∙∙M2 A 25
N/L2 L1
N/L2
L1
N/L2 L1N/L2 L1
PC/- PA/+ PC/- PA/+ PC/- PA/+
DC+
DC
-
Figure 3: Multiple mains fuses for single-phase drives
See chapter "6.2 DC fuses" for fuses for the DC bus.
The use of mains reactors can reduce the input current. Due to the
lower input current, it may be possible to operate the drives with just a
single mains fuse.
3 Engineering
LXM32
26
Common DC bus
MNA01M001EN, V1.01, 08.2014