The Siemens 3RF3310-1AA14 is a 1-pole SIRIUS 3RF33 solid-state contactor rated for AC-1 resistive load switching at 10 A at 40 °C, with a supply voltage range of 48-460 V and a 24 V AC/DC control coil via screw terminals. The AC-1 rating means it's built for resistive loads like heaters or incandescent lighting — not for motor starting, where the inrush would exceed the semiconductor junction's surge capability. The 24 V AC/DC coil gives you flexibility in control voltage: it accepts either 24 V AC or DC without needing a separate rectifier or coil changeout, simplifying panel wiring.
This contactor is a DIN-rail mount unit sized at 97 x 27 x 105 mm, which slots into a standard 22.5 mm-wide enclosure footprint alongside other SIRIUS components. The screw terminals accept up to 4 mm² conductors, so it's suited for control cabinet wiring with ferruled or solid copper. The 1-pole configuration means it switches one line — use it for single-phase loads or as a phase leg in a three-phase heater bank where you need individual leg switching.