Siemens Time-Delayed Auxiliary Switch, 24 → 240 V ac/dc

The Siemens SIRIUS 3RA28 Solid State relay is a function module for switching operations involving time delays in control, starting, protection and regulation circuits. It performs the function of providing supply initiated with On delay in the time range between 0.05s and 100 s. The simple plug-in facility requires no tools and permits the implementation of controller-independent time functions without any additional wiring.

Screw or spring-loaded termination
Selectable outputs 1 NO + 1 NC or 1 C
IEC, CCC, UL CSA approved