Rating and fit for resistive loads
The 3RF3330-3AA02 is a 1-pole solid-state contactor from the SIRIUS 3RF33 family, rated for 30 A in AC-1 duty (resistive load) at 40 °C ambient. If your BOM line calls for switching resistive loads up to 30 A without arcing or contact wear, this is the part. Control voltage spans 24-230 V AC and 24 V DC, so it accepts both common industrial control signals without needing a separate interface relay. The ring cable lug connection suits permanent wiring in a panel — not a plug-in base, so factor in termination time.
Packaged as a single piece, dimensions 105 x 27 x 122 mm — a compact footprint for a 30 A solid-state contactor. Mounts on standard DIN rail; the ring cable lug connection means you terminate power and load wiring directly to the contactor terminals, not through a separate socket. For a panel-builder, that saves one component count but requires access for screw termination.