SIRIUS 3RT2 contactors/contactor assemblies 
  2.2 Product description 
SIRIUS Innovations 
System Manual, 01/2011, A8E56203870002-03 
105 
2.2.2.1  3RH2 contactor relays 
3RH2 contactor relays are available in the versions detailed below. The contactors can be 
supplied with AC and DC drives of between 24 V and 230 V (preferred voltages). Different 
voltage versions are available on request. 
Versions 
Table 2- 3  Versions of the 3RH2 contactor relays 
Feature  Specifications  Contactors for special applications 
Version  Contactor relay for switching in 
the auxiliary circuit 
Contactor relay with extended 
operating range for switching 
auxiliary circuits 
Auxiliary coupling relay for 
switching auxiliary circuits 
Number of poles  4 / 8  4  4 
Size  S00 
Width   45 mm 
 
Connection systems 
The contactor relays can be supplied with the connection systems detailed below. 
Table 2- 4  Connection systems available for 3RH2 contactor relays 
Connection system  Contactor relay for 
switching in the auxiliary 
circuit 
Contactor relay with extended 
operating range 
Coupling relay for switching 
auxiliary circuits 
Screw connection  ✓  ✓  ✓ 
Spring-loaded connection  ✓  ✓  ✓ 
Ring cable lug connection  ✓  ---  --- 
Solder pin connection (only 
possible in conjunction with 
the "solder pin adapter" 
optional accessory) 
✓  ✓  ✓