SIRIUS 3RR2 current monitoring relays 
  8.9 Accessories 
SIRIUS Innovations 
System Manual, 01/2011, A8E56203870002-03 
729 
8.9  Accessories 
8.9.1  Accessories 
For maximum flexibility, accessories can be added to the current monitoring relays as 
required, easily, and without the need for tools. 
Mountable accessories 
The following accessories are available for the current monitoring relays: 
●  Terminal support for stand-alone assembly 
For stand-alone assembly or if an overload relay is being used at the same time 
●  Sealable cover 
To protect the parameter settings against unauthorized or unintentional manipulation 
8.9.2  Terminal support for stand-alone assembly 
8.9.2.1  Description 
For a stand-alone assembly or if an overload relay is being used at the same time, adapters 
for stand-alone assembly are available for separate DIN rail mounting or screw mounting. 
The current monitoring relays can also be assembled as stand-alone devices with 
corresponding terminal supports for stand-alone assembly. 
The accessories are exactly the same as the accessories for the 3RU21 thermal overload 
relay and the 3RB3 solid-state overload relay. 
Table 8- 7  Stand-alone assembly, current monitoring relays 
Size  Connection system  Terminal support for stand-
alone assembly 
Screw-type  3RU2916-3AA01 S00 
Spring-loaded  3RU2916-3AC01 
Screw-type  3RU2926-3AA01 S0 
Spring-loaded  3RU2926-3AC01