SIRIUS 3RA28 function modules for mounting on 3RT2 contactors   
7.5 Configuration 
  SIRIUS Innovations 
656  System Manual, 01/2011, A8E56203870002-03 
7.5  Configuration 
7.5.1  Configuration 
3RA2811-.CW10 
 
1
/
4
$
5$
$$
 
3/A2
3RA28
Q
t
 
The 3RA2811 solid-state timing relay with semiconductor output is connected to the 
contactor coil in series.  
 
 
Note 
Contactor coil terminal A1 must not be connected. 
 
3RA2812-.DW10 
 
$
$
/
1
4
5$
%
6
$
$
 
t
Q
B1/A4
3/A4
≥35 ms
 
If the 3RA2812 solid-state timing relay with semiconductor output is fitted, the contactor coil 
is contacted through the timing relay.  
 
 
Note 
Contactor coil terminals A1 and A2 must not be connected.