The Siemens 3RF2 series is a solid-state contactor 1-phase 3RF2 C 51 / 40 A / 40 °C 48-600 V / 24 V DC, screw terminal solid-state contactor SIRIUS 3RF23 used for switching resistive/inductive loads, e.g. of heaters or valves in a bottling plant. The devices are approved for worldwide use (e.g. IEC and UL/CSA).The solid-state contactors are available as single-phase or three-phase devices. They are available for different power ratings and rate operating voltages. Designed for AC or DC operation, they are available with screw, spring-type or ring terminal lug connections.

They are also extremely reliable at high switching frequencies
In addition to the 3RF29 function modules, control connectors and terminal covers are also available as accessories
Simple, efficient and always up to date - SIRIUS modular system
The compact design saves space on the mounting rail