SIRIUS Innovations 
System Manual, 01/2011, A8E56203870002-03 
641 
SIRIUS 3RA28 function modules for mounting on 
3RT2 contactors 
7
7.1  Standards 
Applicable regulations, standards, and approvals 
The following general regulations and standards apply for the 3RA28 timing relay: 
 
General regulations  Explanation 
IEC 61812-1/DIN VDE 0435 Part 2021  Electrical relays, timing relays 
IEC 61000-6-2/IEC 61000-6-4  Electromagnetic compatibility 
IEC 60947-5-1; DIN VDE 0660 Part 200  Low-voltage switchgear and controlgear 
IEC 60721-3-1 / -3  Environmental conditions 
IEC 60529  Degree of protection 
CE/UL/CSA/CCC/C-Tick/shipbuilding approval  The timing relays have UL and CSA approval for 
use all over the world. They have also been 
prototype-tested by the GL, LRS, and DM 
shipbuilding companies. 
Approvals/Test reports 
Confirmation of approvals, along with test certificates and declarations of conformity, can be 
obtained on the Internet from Technical Assistance (www.siemens.com/lowvoltage/technical-
assistance). 
Reference 
The standards from Catalog LV 1 "Low-Voltage Controls and Distribution SIRIUS - 
SENTRON - SIVACON" in the appendix always apply. You will find extracts from the most 
important standards relating to the SIRIUS modular system in the chapter titled System 
overview, underStandards (Page 23).