SIEMENS
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Siemens IK PI · 2015
AS-Interface
Slaves
Motor starters for use in the control cabinet
SIRIUS 3RA6 compact starters
> Infeed system for 3RA6
4
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Overview
(continued)
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Infeed
The 3-phase infeed is available with screw connection
(25/35 mm
2
up to 63 A or 50/70 mm
2
up to 100 A) and spring-
type connection (25/35 mm
2
up to 63 A).
The infeed with spring-typed 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 infeeds with screw connection enable connection of the
main conductors (L1, L2, L3) either from above or from below.
The infeed with screw connection is supplied complete with
1 end cover, the infeed with spring-load connection complete
with 2 end covers.
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Three-socket expansion modules
The expansion module with 3 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 2 con-
necting wedges and 1 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)
&
Two-socket expansion modules
If only 2 instead of 3 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 infeeds
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 right
or left to 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 2 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
3-phase infeeds with screw connection 25/35 mm
2
and
50/70 mm
2
:
•
3RA68 80-2AB terminal covers for infeeds
with screw connection 25/35 mm
2
(3RA6812-8AB/AC)
•
3RA68 80-3AB terminal covers for infeeds
with screw connection
50/70 mm
2
(3RA6813-8AB/AC)
The terminal covers can be used in two ways on the infeed
terminals of the infeeds with screw connection 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 infeed with screw connec-
tion 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 feeder terminal. For better recognition, the covers are shown as
transparent in this illustration and not in their original color.
Terminal blocks
Using the terminal block the 3 phases can be fed out of the
system; this means that single-phase, two-phase and three-
phase components can also be integrated in the system.
After the end cover is pulled out, the terminal block can be
plugged onto an expansion module.
Expansion plug for SIRIUS 3RV29 infeed systems
After the end cover is pulled out, the expansion plug for the
SIRIUS 3RV29 infeed system can be plugged onto an expansion
module. It connects the infeed system for 3RA6 compact start-
ers with the SIRIUS 3RV29 infeed system.
© Siemens AG 2014