System overview 
  1.7 Components and combinations 
SIRIUS Innovations 
System Manual, 01/2011, A8E56203870002-03 
67 
Assembly 
With 3RA28 function modules, a starter can be easily assembled by combining individual 
modules together or by using pre-assembled combinations.  
 
Type of starter  Individual modules  Pre-assembled combinations 
Direct-on-line start  
 
 
Reversing start  
 
 
Star-delta (wye-delta) 
start  
 
 
Reference 
 
More information ...  Is available in ... 
About 3RA28 function modules for direct-on-line 
start and star-delta (wye-delta) start 
Chapter 7 "SIRIUS 3RA28 function modules 
(Page 641)" 
About function modules for reversing starting  Chapter 2 "SIRIUS 3RT2 contactors/contactor 
assemblies (Page 101)"