Introduction
1.1 Responsibility of the user for system configuration and functionality
SIRIUS Innovations - SIRIUS 3RU2 thermal overload relays / SIRIUS 3RB3 solid-state overload relays
10 Manual, 09/2014, A5E03656507420A/RS-AA/002
Advantages through energy efficiency
Siemens offers you a unique portfolio for efficient energy management in industry – a
process that serves to optimally shape your energy requirement. Operational energy
management is subdivided into three phases:
● Identifying
● Evaluating
● Realizing
Siemens supports you with suitable hardware and software solutions in every phase of a
project.
More information can be found on the Internet
(http://www.automation.siemens.com/mcms/industrial-controls/en/energy-efficiency).
The 3RB30/3RB31 electronic overload relays make the following contribution to energy
efficiency in an overall installation:
● Reduced intrinsic power loss
● Reduced control cabinet heat development
● Smaller control cabinet air conditioning units required
Figure 1-1 Overview of the energy management process
To understand these operating instructions you should have a general knowledge of
automation engineering and low-voltage switchgear.
The manual is valid for these overload relays. It contains a description of the devices that is
valid at the time of publication.
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