The Siemens 3RF3310-1BA02 is a 1-pole solid-state contactor from the SIRIUS 3RF33 family, rated AC-15 at 6 A at 40 °C. It switches loads at 24-230 V AC or 24 V DC via a screw-terminal connection. The AC-15 rating means it's designed for switching electromagnetic loads like contactor coils, solenoid valves, and small transformers — the inrush current on those inductive loads is what the rating accounts for, not just steady-state current.
The 97 x 27 x 105 mm envelope leaves room for adjacent devices in a crowded enclosure. Screw terminals accept the usual solid or ferruled stranded wire — no special tooling needed for the line-side or load-side connections.