SIRIUS 3RT1016-1AM21 — power contactor for motor and resistive loads
The Siemens 3RT1016-1AM21 is a SIRIUS power contactor in the compact Size S00 frame, designed for switching motor loads up to 4 kW at 400 V in AC-2 duty (slip-ring motors) and 8.5 A in AC-4 duty (plugging/inching). The 24 VDC coil draws 10 A at rated voltage, with an operating range of 0.8 to 1.1 times nominal at 50 Hz and 0.85 to 1.1 at 60 Hz — meaning the coil holds in reliably even if the control supply sags to about 19 VDC.
Mounting and integration — DIN rail, IP20, pollution degree 3
Mounts via screw and snap-on onto 35 mm standard mounting rail per DIN EN 50022. The 45 mm width and 57.5 mm height leave room for auxiliary contact blocks on the front. IP20 on the front and terminals means it is suited for enclosed panel environments where tools are required to access live parts. Pollution degree 3 rating confirms it handles conductive dust and humidity typical of industrial control cabinets without conformal coating.
Termination and wiring — screw terminals, dual-wire capacity
Main and auxiliary circuits use screw-type terminals accepting 2x (0.5 to 1.5 mm²) solid, 2x (0.75 to 2.5 mm²) stranded, or up to 2x (0.75 to 4 mm²) max. AWG equivalents are 2x (20 to 16) solid, 2x (18 to 14) stranded, and 1x 12. This dual-wire capability simplifies daisy-chaining in motor starter assemblies without additional terminal blocks.
Environmental and endurance — 30 million mechanical cycles, -25 to +60 °C
Rated for 30 million mechanical operations, this contactor suits high-cycle applications like conveyor sorters or packaging machines. Operating temperature range of -25 to +60 °C covers most indoor industrial environments without derating. Side-by-side mounting is permitted, which helps when packing multiple contactors into a compact motor control centre.