SIRIUS 3RA28 function modules for mounting on 3RT2 contactors 
  7.6 Mounting 
SIRIUS Innovations 
System Manual, 01/2011, A8E56203870002-03 
661 
 
Step  Operating instruction  Figure 
1  Check that the interlock slide is 
engaged in the uppermost position. 
2  Attach the function module to the 
contactor from the front. 
3  Push the interlock slide down with a 
screwdriver (3 mm blade width) until it 
engages.