Siemens SIRIUS 3RT2 - Applications; Function Modules for Direct-On-Line Start

Product description
3.3 Applications
SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
20 Manual, 02/2019, A5E03656507620A/RS-AD/005
3.3 Applications
3.3.1 Function modules for direct-on-line start
Applications
The function modules for direct-on-line start are used for the time-delayed switching of
contactors. The following function modules are available:
● Electronic timing relay with semiconductor output
● Solid-state time-delay auxiliary switch with 1 CO contact or 1 NC contact/1 NO contact
Features of direct-on-line starters
The function module for direct-on-line start has the following features:
● All modules with wide control voltage range
● Integrated varistor (surge suppressor)
● Applicable for size S00, S0, S2 and S3 contactors.
The following table is an overview of which function modules you can use for which size
of contactors.
S00
S0
S2
S3
3RA2811, 3RA2812
X
X
-
-
3RA2831, 3RA2832 - - X X
3RA2813, 3RA2814, 3RA2815
X
X
X
X
● Large wide voltage range (24 ... 240 V AC/DC), except for 3RA2831, 3RA2832
● Extended operating ranges (24 ... 90 V, 90 ... 240 V), for 3RA2831 and 3RA2832 only
● 3 selectable time ranges (1 s, 10 s, 100 s)
● Operating time adjustment from 5 ... 100% per time range
● Switch position indicator for the contactor below (plunger)
Reference
More information ...
Is available in ...
About application areas Chapter entitled "Configuration (Page 33)"