System overview
1.4 Overview
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
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1.4 Overview
1.4.1 SIRIUS modular system
SIRIUS modular system
The SIRIUS product range comprises devices for use in switching, starting, protecting, and
monitoring, as well as combinations thereof, which are known as "load feeders". Load
feeders can be created from the following devices:
● 3RT/3RH contactors
● 3RF solid-state switching devices
● 3RW soft starters
● 3RV motor starter protectors
● Thermal (3RU) or solid-state (3RB) overload relays
● 3RR monitoring relays
Since all devices are matched to one both electrically and mechanically, they can be
combined really easily to create load feeders. Alternatively, pre-assembled 3RA2 load
feeders or 3RA6 compact starters are also available.
The devices named above are supplemented for the main circuit by devices for the control
circuit: 3RA28 function modules for mounting on 3RT2 contactors and 3RA27 function
modules for connection to the higher-level control.
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