SIEMENS
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Siemens IC 10 · 2017
Load Feeders and Motor Starters for Use in the Control Cabinet
SIRIUS 3RA6 Compact Starters
Infeed system for 3RA6
8
In addition, the integrated PE bar means it is optionally possible
to connect the motor cable directly to the infeed system without
additional intermediate terminals. The infeed system for 3RA6
compact starters is designed for summation currents up to
100 A with a maximum conductor cross-section of up to 70 mm²
on the infeed terminal block.
The infeed system can be mounted on a standard mounting rail
or flat surfaces.
$
Infeed
The three-phase infeed is available as a screw-type infeed
(25/35 mm
2
up to 63 A or 50/70 mm
2
up to 100 A) and as
a spring-loaded infeed (25/35 mm
2
up to 63 A).
The infeed with spring-type terminal can be fitted on the left as
well on as the right to an expansion module.
The infeed with screw terminal is supplied only with a 3-socket
expansion module and permanently fitted on the left side.
The screw-type infeeds enable connection of the main
conductors (L1, L2, L3) either from above or from below.
The screw-type infeed is supplied complete with one end cover,
the spring-loaded infeed complete with two end covers.
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3-socket expansion module
The expansion module with three sockets for compact starters is
available with screw connection and with spring-type connec-
tion.
Expansion modules enable the infeed system to be expanded
and can be fitted to each other in any number.
Two expansion modules are held together with the help of two
connecting wedges and one expansion plug. These assembly
parts are included in the scope of supply of the respective
expansion module.
When the infeed system for 3RA6 is used, the compact starters
(plug-in modules) are easily assembled and disassembled even
when live.
Optional possibilities:
•
PE connection on motor outgoing side
•
Outfeed for external auxiliary devices
•
Connection to 3RV29 infeed system
•
Integration of SIRIUS 3RV1 and 3RV2 motor starter protectors
size S0 up to 25 A (using 3RA6890-0BA adapter)
&
2-socket expansion module
If only two instead of three additional sockets are required,
then the 2-socket expansion module is the right choice. It has
the same functionality as the 3-socket expansion module.
(
Expansion plug
Two expansion modules can be connected together using the
expansion plug. Flexible expansion of the infeed system is thus
possible.
)
PE infeed
This module enables a PE cable to be connected.
The PE infeed can be ordered with screw connection and
spring-type connection (35 mm
2
) and can be fitted on the left or
right of the expansion block.
*
PE expansion plug
The PE expansion plug is inserted from below and enables two
PE bars to be connected.
+
PE pick-off
The PE pick-off is available with screw connection and spring-
type connection (6/10
mm
2
). It is snapped into the infeed system
from below.
,
Connecting wedges
Two connecting wedges are used to hold together two
expansion modules.
-
End covers
On the last expansion module of a row, the socket provided for
the expansion plug can be covered by inserting the end cover.
.
45 mm adapters for SIRIUS 3RV1/3RV2 motor starter
protectors
SIRIUS 3RV1 and 3RV2 motor starter protectors size S0 with
screw connection can be fitted to the adapter, enabling them to
be plugged into the infeed system.
IP20 terminal covers for increasing finger-safety
Universally configured terminal covers are available for the
25/35 mm
2
and 50/70 mm
2
three-phase screw-type infeeds:
•
3RA6880-2AB terminal covers for screw-type infeeds
25/35 mm
2
(3RA6812-8AB/AC)
•
3RA6880-3AB terminal covers for screw-type infeeds
50/70 mm
2
(3RA6813-8AB/AC)
The terminal covers can be used in two ways on the infeed
terminals of the screw-type infeeds 25/35 mm² and 50/70 mm²
(see illustration)
:
•
If the terminals are connected, the cables are also covered:
- by approx. 14 mm with the 3RA6880-2AB
- by approx. 18 mm with the 3RA6880-3AB
•
On clamping points without connected cables, the covers can
be turned once and then pushed over the clamping points for
finger-safe covering of the metal parts.
Use of the 3RA6880-2AB terminal cover on the screw-type infeed
25/35 mm² (3RA6812-8AB/AC). The upper cover increases the finger-
safety for the connected conductors. The identical lower cover is turned
for use and prevents touching of the voltage-carrying metal parts of the
infeed terminal. For better recognition, the covers are shown as transpar-
ent in this illustration and not in their original color.
© Siemens AG 2016