Siemens SIRIUS 3RT - Configuration

Accessories
9.3 Auxiliary switch blocks
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
258 Manual, 09/2017, A5E03656507120A/RS-AE/006
9.3.1.2
Configuration
Maximum number of auxiliary switch blocks
The maximum number of auxiliary switch blocks which can be attached is determined by
technical constraints and by the applicable standard.
Note
A maximum of four NC contacts is possible (from integrated and laterally mounted auxi
liary
switch blocks combined).
For 3RT23 and 3RT25
contactors in size S0, auxiliary switches can only be fitted by means
of a lateral auxiliary switch block.
With the 4
-pole version, you can only mount the auxiliary switch block on one side.
With 3RT26
capacitor contactors in sizes S00 and S0, no additional lateral auxiliary switch
blocks may be mounted.
With 3RT26
capacitor contactors in sizes S2 and S3, you can mount one additional lateral
auxiliary switch block on the right
-hand side.