What this SIRIUS S0 contactor delivers
It's rated for 7.5 kW motor loads at both 500 V and 690 V in AC-3 duty — that's the standard induction motor switching category, so it handles the locked-rotor and break currents you'd see on a typical pump, fan, or compressor start. The 45 mm width and 85 mm height fit the S0 footprint — a common slot in Siemens SIRIUS distribution and motor starter assemblies. Front face carries an IP20 rating; the terminals themselves are IP00, meaning the wiring zone needs clearance from live parts in the enclosure.
For Type 1 coordination (no damage to the enclosure, contactor may need replacement after a fault), the 3RT1024-1AC00 requires a gL/gG fuse rated at 63 A. For Type 2 coordination (contactor remains operational after a fault), the fuse drops to 25 A. That's the standard IEC 60947-4-1 distinction — pick the coordination type based on whether you want to reuse the contactor after a short circuit or just contain the arc.