Siemens SIRIUS 3RT - Advantages through Energy Efficiency; Required Basic Knowledge; Scope of the Manual

Introduction
1.3 Advantages through energy efficiency
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006
15
1.3
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:
● Identification
● Evaluation
● Realization
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).
3RT contactors make the following contribution to energy efficiency in the overall plant:
● AC/DC coils with electrical control to reduce the closing power and holding power
● Smaller power supplies in the control circuit through low holding power at 24 V DC
● Reduced energy requirements of the contactors thanks to increased switching capacity in
each size from S00 to S3
Figure 1-1 Overview of the energy management process
1.4
Required basic knowledge
To understand these operating instructions you should have a general knowledge of
automation engineering and low-voltage switchgear.
1.5
Scope of the manual
The manual is valid for these contactors and contactor assemblies. It contains a description
of the devices that is valid at the time of publication.