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Standards
2.1
Standards
Applicable standards
3RU21 thermal overload relays and 3RB30/3RB31 solid-state overload relays meet the
requirements of the following standards:
Table 2- 1
Device standards
EMC standard
Resistance to
extreme climates
Touch protection
You can find more information about the touch protection of 3RU21 thermal overload relays
and 3RB3 solid-state relays in the Chapter "Connection (Page 65)".
Reference
Other standards that the 3RU21 and 3RB30 / 3RB31 overload relays conform to are listed in
the Chapter "Technical data (Page 101)". SIRIUS components have been approved by a
whole range of bodies for various sectors (shipbuilding, etc.). An up-to-date list of approvals
is provided in Chapter 16 of the Siemens catalog IC 10 - "SIRIUS Industrial Controls". You
will find more information and an option to download certificates on the internet
(http://www.siemens.com/automation/service&support).
SIRIUS Innovations - SIRIUS 3RU2 thermal overload relays / SIRIUS 3RB3 solid-state overload relays
Manual, 09/2014, A5E03656507420A/RS-AA/002
Standards
IEC/EN 60947-1
•
IEC/EN 60947-4-1
•
IEC/EN 60947-5-1
•
UL 508
•
UL 60947-4-1
•
CSA C 22.2
•
3RB30°/ 3RB31 electronic overload relays additionally fulfill the EMC
standards specified in IEC 60947-4-1.
The overload relays are climate-proof according to IEC 60721-3.
Degree of protection according to IEC 60529: IP20
2
17
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