The Siemens 3RF3365-1BA04 is a 1-pole solid-state contactor from the SIRIUS 3RF33 family, rated for AC-15 duty at 27.5 A at 40 °C. The load circuit spans 48 to 460 V AC, and the control is 24 V DC with instantaneous switching. Termination is via screw terminals. AC-15 is the switching category for electromagnetic loads — solenoids, clutches, and contactor coils. The 27.5 A rating at 40 °C tells you this part handles those inductive inrush currents without derating at typical panel ambient temperatures.
Integration notes
Screw terminals accept standard industrial wiring. The 1-pole form factor means it switches one phase; for three-phase motor loads you need three units or a 3-pole variant. Mounts on DIN rail in the panel alongside other SIRIUS control gear. Packaging dimensions are 105 x 50 x 125 mm — fits a standard distribution board footprint. The 24 V DC control coil is compatible with common PLC digital outputs and industrial power supplies.