The Siemens 3RF3306-1AA45 is a 1-pole solid-state contactor from the SIRIUS 3RF33 family, rated 6 A in AC-1 duty at 40 °C. That AC-1 rating means it's built for resistive loads like heaters or lighting banks — not motor starting, which would need an AC-3 or AC-4 rating. The switching voltage range is 48-600 V, and the control side takes 4-30 V DC via screw terminals, so it's a straight swap into a standard 24 V DC control loop without needing a separate interface relay. Blocking voltage is 1200 V, giving it headroom on 480 V lines.
Compliance and export notes
RoHS compliant since 15-01-24.
Packaged as a single piece, dimensions 97 x 27 x 105 mm. That 27 mm width means it takes up one standard DIN-rail module slot — fits neatly in a crowded panel without eating space. Screw terminals for both power and control; no special tooling needed on site.