Siemens SIRIUS 3RT Manual page 250

Accessories
9.1 Overview of accessories for 3RT2 contactors
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Figure 9-3
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3RA28 function modules
Function module for IO-Link, direct-on-line start
LED display indicator module
Surge suppressor
Control kit for manual operation of contactor contacts
3-phase infeed terminal (type E)
Wiring modules, top and bottom, for connecting the main current paths
Wiring modules, top and bottom, for connecting the control current paths
Link module for motor starter protector
Star jumper, 3-pole, without connection terminal
Link module for two contactors in series (safety main circuit connectors for two contactors)
Coil terminal module, top and bottom
Parallel switching connector
Accessories for 3RT2 contactors (size S2)
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006