Siemens SIRIUS 3RT2.1 Series System Manual

SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
7.5 Configuration
SIRIUS Innovations
658 System Manual, 01/2011, A8E56203870002-03
3RA2815-..W10
L1(+)
N(-)
S1
A2
A1
16
18
15
Q
≥200 ms
A
1/A2
15/18
15/16
t
L1(+)
N(-)
S1
A2
A1
36
28
27 35
Q
≥200 ms
A
1/A2
27/28
35/36
t
The 3RA2815 solid-state time-delay auxiliary switch has the following features:
● The voltage is supplied through the plug-in contacts directly via the contactor's coil
terminals, parallel to A1/A2.
● The timing function is activated by switching on the contactor on which the delayed
auxiliary switch is mounted.
● The 3RA2815 solid-state time-delay auxiliary switch works without auxiliary voltage.
● The minimum ON duration is 200 ms.
● A varistor is integrated in the solid-state time-delay auxiliary switch to attenuate contactor
coil switching overvoltages.
Note
The setting of the output contacts is not defined in as-supplied state (bistable relay).
Connect the control voltage and then disconnect it again to set the contacts to the normal
position.

Siemens SIRIUS 3RT2.1 Series Specifications

General

Brand	Siemens
Model	SIRIUS 3RT2.1 Series
Category	Industrial Equipment
Language	English