SIEMENS
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Siemens IC 10 · 2017
Contactors for Special Applications
SIRIUS 3RT23 contactors, 4-pole
4
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Overview
Standards
IEC 60947-1, EN 60947-1,
IEC 60947-4-1, EN 60947-4-1,
IEC 60947-5-1, EN 60947-5-1 (auxiliary switches)
The contactors are suitable for use in any climate.
They are finger-safe according to IEC 60529.
For accessories and spare parts,
see page 3/75 onwards
.
With sizes S0 and S2, two auxiliary contacts 1 NO + 1 NC
are included in the basic version.
Mountable auxiliary contacts
Size S00
Four auxiliary contacts, including no more than three NC
Sizes S0 and S2
Four additional auxiliary contacts, including no more than
two NC
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Application
The contactors are suitable:
•
For switching resistive loads
•
For isolating systems with ungrounded or poorly grounded
neutral conductors
•
For system transfers when alternative AC power supplies are
used
•
For use as contactors which only carry current and do not
have to switch in case of inductive loads – e.g. variable-speed
operating mechanisms
•
For switching mixed loads in distribution systems (e.g. for
supplying heaters, lamps, motors, PC power supply units)
with p.f. > 0.8 according to IEC 60947-4-1 test conditions for
utilization category AC-1
For a general description of 3RT contactor, sizes S00 to S2,
see
from page 3/15 onwards
.
© Siemens AG 2016