The Siemens 3RF3310-1BA04 is a 1-pole solid-state contactor from the SIRIUS 3RF33 family, rated for AC-15 duty at 6 A at 40 °C.
The AC-15 rating (switching electromagnetic loads — typical for contactor coils, solenoid valves, and small transformers) at 6 A means it handles inrush currents up to 10x steady-state without welding the output. The 48-460 V supply range covers common low-voltage and standard industrial line voltages across global installations. The 24 V DC control is the standard PLC-level signal, so it drops into a 24 VDC control circuit without an interposing relay.