The Siemens 3RF3330-3AA06 is a 1-pole solid-state contactor from the SIRIUS 3RF33 family, rated for 30 A in AC-1 duty at 40 °C. AC-1 is the resistive load rating — this is the current it can switch continuously for heaters, lighting banks, or transformer primaries without derating. For motor loads (AC-3 duty), the usable current will be lower; the datasheet's thermal curve governs that derating. The switching voltage range is 48-600 V AC, covering common three-phase line voltages from 48 V up to 600 V. The control voltage is 24 V DC, which is standard for PLC-driven panels and safety circuits. Connection is via ring cable lug, which gives a more vibration-resistant termination than spring-cage for high-current paths.
RoHS compliance is confirmed since 15-01-24. Note the REACH Article 33 disclosure: Lead (CAS 7439-92-1) is present above 0.1% w/w, which is a standard declaration for many industrial contactors with lead-bearing solder joints or component terminations. This does not affect normal industrial use but may require reporting for certain end-of-life recycling schemes.
The SIRIUS 3RF33 family is designed for DIN-rail mounting in standard control panels. The 1-pole form factor means it switches one phase; for three-phase loads you need three units or a 3-pole variant. The ring cable lug connection expects a ring terminal crimped onto the load cable — verify the lug stud size in the datasheet before terminating.