Configuration
6.2 SIRIUS system configurator
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
68 Manual, 09/2017, A5E03656507120A/RS-AE/006
Description and suitable contactor versions
Contactors with
extended operating
range
Contactors for
railway applications
Contactors for switching electrical loads in the main and control circuits
with extended operating and temperature ranges, e.g. for railway
applications or for use in rolling mills (special versions of contactor range
3RT20/3RH21).
• 3RT2 3-pole power contactors
• 3RH2 4-pole contactor relays
• 3RT2 3-pole coupling relays
• 3RH2 4-pole coupling relays
• 3-pole 3RT1 power contactors
Coupling relays (for
sizes S00 to S 3)
The coupling relays are tailored to the special requirements of working
with electronic controls (extended operating range and reduced coil
power). Different versions are available for main and control circuits
(special versions of contactor range 3RT20/3RH21).
• 3RT20 3-pole coupling relays
• 3RH21 4-pole coupling relays
Contactors in safety
applications
Contactors with fail-safe control input for controlling fail-safe controllers or safety relays for
applications up to SILCL 3 in accordance with IEC 62061, PL e/Cat. 4 in accordance with
EN ISO 13849-1.
Special version: Variant with non-removable auxiliary switch certified to SUVA.
Operation of a motor in
two directions of
rotation (reversing
contactor assembly)
Contactor assembly for operation of a three-phase motor in two directions of rotation.
• 3RA23 reversing contactor assemblies (sizes S00 to S3) fully wired and tested with electrical
and mechanical interlock.
• Reversing contactor assembly as kit for customer assembly
Starting three-phase
motors with reduced
starting current peaks
(contactor assemblies
for star-delta (wye-
delta) start)
Contactor assembly for reducing the starting current and starting torque when starting three-
phase motors.
• 3RA24 contactor assemblies for star-delta (wye-delta) start (sizes S00 to S3) fully wired and
tested with electrical and mechanical interlock.
• Contactor assemblies for star-delta (wye-delta) start as kit for customer assembly
SIRIUS system configurator
Reference
To assist you with configuration, the "SIRIUS system configurator" is at your disposal on the
Internet. Here, you can gather together all necessary products before the actual
configuration process and you can realize complete projects virtually.
You can find the "SIRIUS system configurator" on the Internet
(http://www.siemens.com/sirius/configurators).