Auxiliary switches and function modules
Siemens Auxiliary switches and function modules
Plug-on auxiliary switch blocks plus function and link modules for contactor control.
If the auxiliary contacts on the contactor are not enough, a block is plugged on – on the front for up to four contacts, laterally for two on each side. Terminal designations are standardised and the assignment is given in the datasheet of every article. In addition there are the 3RA28 and 3RA27 function modules, which handle direct-on-line, reversing and star-delta sequences directly in the contactor – either conventionally wired or as an IO-Link version that controls the starter over a data line and reports back. The 3RC7 link modules perform the same task for communication-capable contactor assemblies.
Parent category: Siemens SIRIUS 3RT contactors.
Product benefits
- Genuine Siemens parts – fit and ratings match the contactor
- Wearing parts and spares keep existing plants running instead of replacing them
- Plug-on and add-on parts need no special tool
- Clear assignment by series and size – the datasheet values are shown with every article
- Still available for the older 3RT1 and 3RH1 series as well
