The Siemens 3RT1024-1BB44-ZW95 is a 3-pole contactor in the SIRIUS family, rated AC-3 at 5.5 kW/400 V for motor switching, with a DC 24 V coil. The Size S0 frame and screw terminals fit standard panel layouts — no special tooling needed to land the wires.
The AC-3 5.5 kW/400 V rating is the motor-duty spec: it handles the inrush of a squirrel-cage motor up to that power and makes/breaks under load. The DC 24 V coil means it's a straight DC pick-up — no AC rectifier inside, so verify your control supply is clean DC, not rectified AC. The 2 NO + 2 NC aux contacts are wired as standard; the NO pair can seal in the coil, the NC pair can signal status to a PLC or safety circuit.
Integration note
Size S0 mounts on DIN rail or panel with two screws. The DC 24 V coil draws its rated holding power continuously — no economizer circuit inside.