SIRIUS 3RA21/22 load feeders   
6.6 Mounting 
  SIRIUS Innovations 
598  System Manual, 01/2011, A8E56203870002-03 
6.6.3.3  On busbar system 
All device combinations can be mounted on busbars. Busbar adapters have to be used for 
busbar mounting. One adapter is required for direct-on-line starters; a pair of adapters is 
required for reversing contactor assemblies.  
 
Figure 6-4  Size S0 reversing starter with spring-loaded connection system mounted on busbar 
The busbar adapters and the associated mounting parts can be purchased as accessories. 
●  Part of the assembly kit. 
●  Part of the pre-assembled load feeders.