SIEMENS
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Siemens IC 10 · 2017
Coupling Relays
SIRIUS 3RQ3 coupling relays, narrow design
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Overview
SIRIUS 3RQ3 coupling relays
SIRIUS 3RQ3 coupling relays in narrow design are used for cou-
pling control signals from and to a controller, and they are avail-
able in different versions:
•
Coupling relays with relay output (not plug-in)
•
Coupling relays with plug-in relays
•
Coupling relays with semiconductor output (not plug-in)
Coupling relays with relay output (not plug-in)
AC and DC operation
IEC 60947-5-1, EN 60947-5-1
The input and output coupling relays differ with regard to the
positioning of the terminals and the LEDs.
Coupling relays with plug-in relays
AC and DC operation
IEC 60947-1
The coupling relays are plug-in, so the relay can be replaced
quickly at the end of its service life without detaching the wiring.
Coupling relays with semiconductor output (not plug-in)
AC and DC operation
IEC 60947-1, EN 60664-1 and EN 50005;
coupling relays with semiconductor output: EN 60747-5;
Programmable controllers: IEC 61131-2
The input and output coupling relays differ with regard to the
positioning of the terminals and the LEDs.
The coupling relays with semiconductor output have extremely
high contact reliability, so they are especially suitable for
electronic systems.
For test purposes, versions are available with
manual-0-automatic switches.
© Siemens AG 2016