SIRIUS S0 power contactor — 3RT1024-1AL24-ZX95
The Siemens SIRIUS 3RT1024-1AL24-ZX95 is a size S0 power contactor rated for motor loads up to 7.5 kW at both 500 V and 690 V, with a 24 VDC coil.
The 7.5 kW motor rating at 500 V and 690 V tells you this contactor handles a 3-phase induction motor up to that mechanical output — typical for a moderate pump, fan, or conveyor drive on a 400/480 V or 575/600 V line. The AC-4 rating of 12.5 A at 400 V covers inching or plug-reverse duty where the contactor makes and breaks stalled-rotor current; if your application cycles the motor under load, that's the number to size against, not the AC-3 continuous rating.
Wire range for the main circuit accepts up to 2x 10 mm² stranded or 1x 8 AWG, with a recommended fuse of 25 A gL/gG for type 2 coordination or 63 A for type 1.