Siemens SIRIUS 3RH Series, System Manual

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SIRIUS 3RT2 contactors/contactor assemblies
2.2 Product description
SIRIUS Innovations
104
System Manual, 01/2011, A8E56203870002-03
2.2 Product description
2.2.1 Overview of the contactor range
The SIRIUS range offers various switching devices for the safe and functional switching of
electrical loads. The table below provides an overview of the contactor versions and
contactor assemblies available in size S00/S0 (table contains versions featuring screw-type
terminals).
Size 3RH2 contactor
relays
3RT2 power contactors 3RA23 reversing contactor
assembly
3RA24 contactor assembly for
star-delta (wye-delta) start
S00
S0 ---
2.2.2 Device versions
Various different switching devices are available for switching electrical loads. The contactor
is the ideal device for performing switching operations which are frequently repeated; it is the
most commonly used switching device in industry, mechanical engineering, and the
manufacture of switching stations.
The SIRIUS contactor range with a width of 45 mm (size S00/S0) comprises:
●
3RT20 power contactors for switching motors of up to 18.5 kW/400 V (AC-3) and resistive
loads of up to 50 A (AC-1)
● 3RH2 contactor relays for switching in the control circuit with contact versions of 4 NO
contacts, 3 NO co 1 NC contact, and 2 NO co 2 NC contacts
● 3RA23 (reversing) and 3RA24 (star-delta (wye-delta)) contactor assemblies
Reference
More information ... Can be found in the chapter titled ...
About the basic and special versions of the
contactor relays and power contactors
Configuration (Page 116)