SIEMENS
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Siemens IC 10 · 2017
Reversing Contactor Assemblies
SIRIUS 3RA23 reversing contactor assemblies, up to 55 kW
3
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Overview
The 3RA23 reversing contactor assemblies in sizes S00 to S3
can be ordered as follows:
•
Fully wired and tested, with mechanical and electrical
interlock;
see from page 3/162 onwards
•
For all individual parts for customer assembly,
see from page 3/75 onwards.
The 3RA23 reversing contactor assemblies have screw or
spring-type terminals (main and control circuits) and are suitable
for screw fixing and snap-on mounting onto TH 35 standard
mounting rails.
Complete 3RA23 reversing contactor assemblies
The fully wired reversing contactor assemblies are suitable for
use in any climate.
They are finger-safe according to IEC 60529.
The 3RA23 reversing contactor assemblies of size S00 to S3
each consist of two contactors with the same power, with one
NC contact (S00) or one NO contact and one NC contact
(S0 to S3) in the basic unit. The contactors are mechanically
and electrically interlocked (NC contact interlock).
3RU2 overload relays
(see from page 7/84 onwards)
or 3RB3
overload relays
(see from page 7/97 onwards)
for contactor
mounting or stand-alone installation, SIMOCODE pro 3UF7
motor management and control devices
(from page 10/14
onwards)
or 3RN thermistor motor protection evaluation units
(page 10/164)
can be used for motor protection.
Reversing contactor assemblies with voltage tap-off
The 3RA23 reversing contactor assemblies with voltage tap-off
(see pages 3/162 to 3/165)
are required for mounting the
function modules for connection to the controller via the IO-Link
or AS-Interface communication systems. The 3RA27 function
modules must be ordered separately;
see page 3/106
.
For more information on IO-Link and AS-Interface
see
"Industrial Communication", from page 2/1 onwards
.
More information
Home page,
see www.siemens.com/sirius
Industry Mall,
see www.siemens.com/product?3RA23_3RT1
Conversion tool, e.g. from 3RT10 to 3RT20,
see
www.siemens.com/sirius/conversion-tool
Online configurator for 3RT2 contactors,
see
www.siemens.com/sirius/configurators
© Siemens AG 2016