User Manual
3UG4 / 3RR2 monitoring relays 
Manual, 02/2013, NEB927043002000/RS-AA/002 
13 
Safety information 
2
2.1  Standards 
Applicable standards 
The monitoring relays comply with the following standards: 
Table 2- 1  Standards - monitoring relays 
Device standards 
•  IEC / EN 60947-1 "Low-voltage switchgear and controlgear: General rules" 
•  IEC / EN 60947-4-1 "Contactors and motor-starters: Electromechanical 
contactors and motor-starters" 
•  IEC / EN 60947-5-1 "Control circuit devices and switching elements: 
Electromechanical control circuit devices"; VDE 0660 "Low-voltage 
switchgear" 
•  IEC / EN 61557-8 "Equipment for testing, measuring or monitoring of 
protective measures - Electrical safety in low voltage distribution systems 
up to 1000 V AC and 1500 V DC, Part 8: Insulation monitoring devices for 
IT systems". 
•  DIN EN 50042 "Terminal marking" 
•  DIN EN 60044-1 "Instrument transformers - Part 1: Current transformers" 
EMC standard
1)
•  IEC / EN 61000-6-2 "Generic standards - Immunity for industrial 
environments" 
•  IEC / EN 61000-6-4 "Generic standards - Emission standard for industrial 
environments" 
Resistance to 
extreme climates 
•  IEC 60721-3-3 "Classification of environmental conditions" 
The monitoring relays are climate-proof according to IEC 60721-3. 
Touch protection 
•  IEC / EN 60529 "Degrees of protection provided by enclosures" 
Monitoring relays are safe to touch in accordance with IEC / EN 60529. 
1)
  This is a device of Class A. When used in domestic areas, the device can cause radio 
interference. Users may have to take suitable measures. 
Reference 
SIRIUS components have been approved by a whole range of bodies for various sectors 
(shipbuilding, etc.). An up-to-date list of approvals appears in Chapter 10 of the Catalog 
IC 10 - SIRIUS "Industrial Controls" (www.siemens.com/industrial-controls/catalogs
), and 
more information, as well as an option to download certificates, can be obtained on the 
Internet (www.siemens.com/automation
/csi_en
). 










