The Siemens 3RT2016-1AK61-ZX95 is a SIRIUS power contactor in Size S00 — the smallest frame in the SIRIUS family, built for switching motor loads and resistive circuits in control panels up to about 7.5 kW at 400 V. The 45 mm width keeps the rail density high; you can pack several of these next to each other in a compact enclosure.
The 24 V coil draws 10 A at rated value — that's the inrush to pull the armature in; the holding current settles lower. For auxiliary switching at other voltages, the contact ratings drop off: 2 A at 48 V or 60 V, 1 A at 110 V, 0.3 A at 220 V, and 3 A at 400 V. The 230 V rating is given as 1 hp, which maps to a fractional-horsepower motor load.
Switching frequency and thermal limits
Maximum operating frequency depends on the load category: 1,000 cycles per hour for AC-1 resistive loads, 750 for AC-2 and AC-3 motor duty, and 250 for AC-4 (plugging/inching). The AC-3e rating also caps at 750 cycles per hour.
The screw-type terminals on the main contacts accept solid or stranded wire from 0.5 to 4 mm², including dual-wire combinations like 2x 0.5-1.5 mm² or 2x 0.75-2.5 mm². The coil also uses screw terminals.