Siemens SIRIUS 3RF Series User Manual

SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
7.2 Product description
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
643
7.2.1 Device versions
Device versions
● Function modules for direct-on-line start
– Solid-state timing relays with semiconductor output
– Solid-state time-delay auxiliary switches
● Function modules for star-delta (wye-delta) start
● Function modules for reversing starting, see 3RA23 reversing contactor assemblies in the
cha
p
ter titled Contactors (Page 110)
Characteristics
The table below provides an overview of the versions of 3RA28 function modules for
mounting on 3RT2 and 3RH2 contactors.
Versions
Function modules for direct-on-line start
Feature
Solid-state timing relay with
semiconductor output
Solid-state time-delay auxiliary
switch
Function module for
star-delta (wye-delta) start
Function ON-delay and OFF-delay with
auxiliary voltage
ON-delay and OFF-delay
with/without auxiliary voltage
Star-delta (wye-delta) function
Order
numbers
3RA2811-.CW10/
3RA2812-.DW10
3RA2813-..W10/
3RA2814-..W10/
3RA2815-..W10
3RA2816-0EW20 comprising:
1 basic module (3RA2912-0)
2 coupling modules (3RA2911-0)
Size One module for contactor sizes S00 and S0
Width 45 mm 135 mm (3 x 45 mm)
Connection
system
Screw-type, spring-loaded Without terminals (can be used for
contactor screw-type and spring-
loaded connection systems)

Siemens SIRIUS 3RF Series Specifications

General

Brand	Siemens
Model	SIRIUS 3RF Series
Category	Industrial Equipment
Language	English