The Siemens SIRIUS 3RT2016-2AH02 is a size S00 power contactor with a 24 VDC coil and spring-type terminals, designed for snap-on mounting onto 35 mm DIN rail per DIN EN 60715. The auxiliary switch is present and rated for switching at 24 VDC up to 10 A, with derated capacities at higher voltages: 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, and 0.2 A at 440 V. This covers typical control-circuit voltages across global installations. Main contacts are rated for 20 to 12 A (range suggests the lower figure applies for AC-3 duty, the higher for AC-1), with switching frequencies of 1,000 cycles/hour at AC-1 maximum, 750 cycles/hour at AC-2 and AC-3, and 250 cycles/hour at AC-4. The AC-3e rating matches the AC-3 figure at 750 cycles/hour.
Spring-type terminals accept solid or stranded wire from 0.5 to 4 mm², and up to 2x (0.5 to 4 mm²) for paralleled conductors.
Mechanical life is typical at 30,000,000 operating cycles, reflecting the S00 frame's durability for high-cycle applications like conveyor or pump control.