Branch Circuit Protection Of Individual Converters - Siemens SINAMICS G120D Operating Instructions Manual

4.2.8

Branch circuit protection of individual converters

When you install a dedicated 400 V branch for each converter, then you must individually fuse/
protect each branch.
Figure 4-8
Branch circuit protection according to the IEC standard
Table 4-2
Rated power
0.75 kW
1.5 kW
3 kW
4 kW
5.5 kW
7.5 kW
Branch circuit protection according to the UL standard
Use in the American market requires protection devices that meet UL standards as detailed in the
following tables.
Table 4-3
Protection device
Fuses of any manufacturer with faster tripping characteristic than class RK5, e.g. class
J, T, CC, G, or CF
SIEMENS circuit breaker
Type E combination motor controller (designation according to the UL standard - is
available as SIEMENS circuit breaker)
Converter with the control units CU240D-2
Operating Instructions, 10/2020, FW V4.7 SP13, A5E34262100B AH
Power supply to converters through their own dedicated 400 V branch
Branch circuit protection according to the IEC standard
Power Module
6SL3525-0PE17-5AA1
6SL3525-0PE21-5AA1
6SL3525-0PE23-0AA1
6SL3525-0PE24-0AA1
6SL3525-0PE25-5AA1
6SL3525-0PE27-5AA1
Overview of the approved protection devices/fuses according to UL standards
Frame Article No.
size
Fuse Circuit-breaker
FSA 3NA3803 3RV2011-1JA10
FSB 3NA3805 3RV2011-4AA10
FSC 3NA3807 3RV2021-4BA10
3NA3812 3RV2021-4PA10
Installation
4.2 Electrical Installation
Max. rated cur‐
rent of the pro‐
tection device
10 A
16 A
20 A
32 A
UL category
JDDZ
DIVQ
NKJH
41