What this contactor is and where it fits
The Siemens 3RT2016-1AK62-1AA0 is a SIRIUS power contactor in Size S00, the smallest frame in the SIRIUS family, designed for switching motor loads and resistive loads in control panels up to 400 V. It carries a 24 VDC magnet coil with screw-type terminals and includes an integrated auxiliary switch. The 45 mm width and 58 mm height let it pack tightly on a 35 mm DIN rail (DIN EN 60715) using the combined screw-and-snap-on fastening method. Standing mounting on a horizontal surface is the specified orientation.
Ratings that govern the real load
AC-3 switching at 400 V is where this contactor earns its keep for motor duty. The rated operational current at 400 V is 3 A, which sizes it for small three-phase motors — think fractional-horsepower pumps, fans, or conveyor drives. AC-1 resistive load capability is higher but not the primary design target. Switching frequency limits define the thermal cycle: 1 000 operations per hour at AC-1, 750 per hour at AC-2 and AC-3, and 250 per hour at AC-4. The AC-4 figure is the one to watch for plugging or inching duty — it reflects the heavier arc stress of making and breaking locked-rotor current. The coil holds at 24 VDC nominal. Auxiliary contact ratings span from 10 A at 24 V down to 0.2 A at 440 V — the DC switching curve is steep, so verify the control circuit voltage against the table before wiring.
Mounting and wiring clearances
DIN-rail spacing: 10 mm clearance above and below, 6 mm to the side. The 73 mm depth leaves room for wiring in a 200 mm deep enclosure without crowding the gland plate. Terminals accept solid or stranded wire from 0.5 to 4 mm², with dual-wire capability up to 2x 2.5 mm². The screw-type connection is field-serviceable with a standard Pozidriv bit.
Lifecycle and sourcing posture
Operating temperature range is -25 to +60 °C; storage range extends from -55 to +80 °C. The storage limit governs handling and warehousing, not running conditions.