Specifications

AS-Interface Slaves
Motor starters for operation in the control cabinet
3RA6 compact feeders
Infeed system for 3RA6
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Siemens IK PI · 2009
6
■ Overview (continued)
Maximum rated operational current
The following maximum rated operational currents apply for the
components of the infeed system for 3RA6:
In a row of several expansion modules, the maximum rated
operational current from the 2nd expansion module to the end
of the row is 63 A.
Proposal for upstream short-circuit protection devices
The following short-circuit data apply for the components of the
infeed system for 3RA6:
1)
To prevent the possibility of short-circuits, the cables on the terminal block
must be installed so that they are short-circuit resistant according to
EN 60439-1 Section 7.5.5.1.2.
Component Maximum rated operational
current
A
Infeed with screw connection
50/70 mm²
100
Infeed with screw connection
25/35 mm²
63
Infeed with spring-load connection
25/35 mm²
63
Expansion plug
63
Conduc-
tor
cross-
section
Inscriptions Proposal for
upstream short-circuit
protection device
mm²
Short-circuit protection for
infeed block (25 mm² / 35 mm²)
with screw connection
2.5 ... 35 I
d, max
= 19 kA, I²t = 440 kA²s 3RV10 41-4JA10
Short-circuit protection for
infeed block (50 mm² / 70 mm²)
with screw connection
2.5 ... 70 I
d,max
= approx. 22 kA 3RV10 41-4MA10
Short-circuit protection for infeed block
with spring-loaded connection
4 I
d, max
= 9.5 kA, I²t = 85 kA²s 3RV10 21-4DA10
6 I
d, max
= 12.5 kA, I²t = 140 kA²s 3RV10 31-4EA10
10 I
d, max
= 15 kA, I²t = 180 kA²s 3RV10 31-4HA10
16 / 25 I
d, max
= 19 kA, I²t = 440 kA²s 3RV10 41-4JA10
Short-circuit protection for terminal block
1.5 I
d, max
= 7.5 kA 5SY...
2.5 I
d, max
= 9.5 kA
1)
4 I
d, max
= 9.5 kA
6 I
d, max
= 12.5 kA