3Ra28 Function Modules For Mounting On 3Rt2 Contactors; Description - Siemens SIRIUS 3RT Series System Manual

2.7.23

3RA28 function modules for mounting on 3RT2 contactors

2.7.23.1

Description

The SIRIUS modular system features 3RA28 function modules for the delayed switching of
contactors and auxiliary switches (e.g. for switching from star operation to delta operation).
3RA28 function modules are available with screw-type or spring-loaded connections in the
following versions:
● Solid-state time-delay auxiliary switches 3RA281.-..W10
With ON-delay or OFF-delay, without auxiliary voltage
● Solid-state timing relays with semiconductor output 3RA2811-.CW10 and
3RA2812-.DW10
With ON-delay or OFF-delay, with auxiliary voltage
● Star-delta (wye-delta) function module 3RA2816-0EW20
Complete module kit for star-delta (wye-delta) start
Reference
More information ...
About the different versions of the 3RA28 function
modules
About mounting 3RA28 function modules on
3RT2 contactors
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
SIRIUS 3RT2 contactors/contactor assemblies
Can be found in the chapter titled...
SIRIUS 3RA28 function modules for mounting on
3RT2 contactors, under Device versions
(Page 643)
SIRIUS 3RA28 function modules for mounting on
3RT2 contactors, under Mounting (Page 660)
2.7 Accessories
211