What this part is and where it lands
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. It snaps onto a 35 mm DIN rail per DIN EN 60715 or screws to a backplate, so it fits standard panel layouts without adapters. The 45 mm width keeps the rail density high; you can pack several of these next to each other in a compact enclosure.
What the ratings mean for fit
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. The mechanical endurance is 30 million operations typical, so this contactor is specced for high-cycle applications like conveyor indexing or packaging machinery where the solenoid sees frequent duty.
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 arcing time runs 10 to 15 ms, and the AC switching time is 7 to 13 ms — fast enough for most PLC-controlled sequences but not for semiconductor-grade precision. Operating temperature range is -25 to +60 °C; storage range is -55 to +80 °C, which covers unheated warehouses.
Mounting and wiring
Mounting position is flexible: +/-180° rotation on a vertical surface, plus +/-22.5° tilt forward/backward. Clearance around the contactor: 10 mm upwards, forwards, and downwards; 6 mm at the sides. 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. An auxiliary switch is built in, so you don't need a separate add-on block for feedback to the PLC.