The Siemens 3RT6015-1AF02 is a SIRIUS-brand power contactor in the compact Size S00 frame (45 mm wide, 73 mm deep, 57.5 mm tall). This is a power contactor — it switches motor loads. At 400 V and 60 °C ambient it's rated for 10.5 kW motor power; at 690 V that climbs to 18 kW. That means it handles standard 400 V three-phase motors cleanly with headroom for 690 V drives if your plant runs on that voltage.
Switching capacity and coil draw
Auxiliary contacts are rated 6 A at 24 V, 1 A at 110 V, and 0.3 A at 220 V — those numbers govern your control-circuit wiring. For the main power path, the motor ratings at 60 °C are the ones that matter: 6 kW at 230 V, 10.5 kW at 400 V, 18 kW at 690 V. The mechanical endurance is 30 million operating cycles typical, and the maximum switching frequency at AC-3 is 750 cycles per hour.
Wiring and integration
Terminals accept solid or stranded wire: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². The minimum permissible cross-section at both 40 °C and 60 °C is 2.5 mm² — don't go smaller for the power circuit.