The Siemens 3RF3310-1AA44 is a 1-pole solid-state contactor from the SIRIUS 3RF33 family, rated for 10 A in AC-1 duty (resistive load) at 40 °C ambient. The load circuit spans 48-460 V AC, and the control input is 4-30 V DC, making it compatible with standard 24 V DC PLC outputs or relay logic. Screw terminals keep wiring straightforward for panel integration — no special tooling needed for the power or control connections. The single-pole configuration means it switches one line; for three-phase resistive loads you'd stack three units or move to a 3-pole variant.
Confirm fit against your load voltage and control voltage range before committing the BOM line.
Where it's used and integration context
Typical deployment is inside a control panel switching resistive AC loads — heater contactors in packaging machinery, oven elements, or lighting contactor banks. The solid-state switching means zero contact wear and silent operation, which matters on lines where mechanical contactor chatter is unacceptable. The 97 x 27 x 105 mm package fits standard DIN-rail enclosures. No derating curve is provided in the basic spec, but the 40 °C rating is the baseline — expect to derate for higher ambient or if mounted in a tightly packed row.