Siemens SIRIUS 3RT2 - Page 37

Configuration
6.2 Configuration
SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
Manual, 02/2019, A5E03656507620A/RS-AD/005
37
3RA2815-..W10
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 solid-state
time-delay auxiliary switch is mounted.
● The 3RA2815 solid-state time-delay auxiliary switch operates without a control signal.
● 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.