Siemens SIRIUS 3RA6 System Manual page 33

Distance from neighboring components
For additional information on clearances to the neighboring components, please refer
to "Minimum distances from neighboring components (dimensions in mm) (Page 275)".
The installation guidelines for compact starters and circuit breakers/fuseless load feeders
must also be observed along with the associated clearances.
Short-circuit protection for SIRIUS infeed system for 3RA6
The short-circuit protection device that is installed upstream of the infeed system must be
designed in accordance with the table below.
Table 4- 5
Conductor cross-
sections
4 mm
6 mm
10 mm
16 mm
35 mm²
Short-circuit protection for infeed 3RA681.-8A.
Recommendation regarding upstream short-circuit protection device (53 kA/400 V AC):
3RV1041-4MA10, NH gL/gG 3NA3; 315 A
Table 4- 6
Conductor cross-sections
Short-circuit protection for terminal block (3RV2917-5D)
1.5 mm
2.5 mm
4 mm
6 mm
SIRIUS 3RA6 compact starter
System Manual, 09/2014, NEB560060102000/RS-AA/006
Short-circuit protection for left or right infeed, 25/35 mm², with spring-loaded connection
technology (3RA6830-5AC)
I
d,max
≤ 9.5 kA
2
≤ 12.5 kA
2
≤ 15 kA
2
/25 mm ≤ 19 kA
2 2
≤ 21 kA
Short-circuit protection for terminal block (3RV2917-5D)
I
d,max
I
2
d,max
I
2
d,max
I
2
d,max
I
2
d,max
I²t
85 kA s
2
140 kA s
2
180 kA s
2
440 kA s
2
530 kA²s
for downstream short-circuit protection device
< 7.5 kA
< 9.5 kA
< 9.5 kA
< 12.5 kA
Application planning
4.3 Supply options (main circuit)
Recommendation regarding
upstream short-circuit
protection device
(53 kA/400 VAC)
3RV1021-4DA10
3RV1031-4EA10
3RV1031-4HA10
3RV1041-4JA10
3RV1041-4MA10
NH gL/gG 3NA3; 315 A
33