The Siemens 3RF3320-1BA06 is a 1-pole solid-state contactor from the SIRIUS 3RF33 family, rated for AC-15 duty at 12 A and 40 °C ambient. It switches loads between 48 and 600 V AC and is controlled by a 24 V DC coil with instantaneous switching. The screw-terminal connection suits panel wiring where a positive clamp is preferred over spring-cage. AC-15 rating means this contactor is designed for electromagnetic loads — contactors, solenoids, and clutches — where inrush can be several times the holding current.
Integration notes
Mounts on a DIN rail; the 105 x 27 x 122 mm envelope fits standard 22.5 mm-wide contactor footprint. Screw terminals accept up to 4 mm² conductors for the power circuit.