SIRIUS S00 power contactor for motor switching
The Siemens 3RT1016-2AN22 is a SIRIUS S00 power contactor rated for AC-2 duty at 4 kW at 400 V, and AC-4 at 8.5 A at 400 V — meaning it handles slip-ring motor reversing (AC-2) and plugging/inching (AC-4) loads in that range. Spring-loaded terminals on the main circuit accept 2x (0.25 to 2.5 mm²) solid or stranded wire, or 2x (24 to 14 AWG).
Auxiliary contact ratings and coordination
The built-in auxiliary contacts are rated for 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — covering typical control-circuit voltages in industrial panels. That lets the panel designer choose selectivity level without oversizing the branch protection.
Mounts side-by-side without derating (side-by-side mounting: yes). Pollution degree 3 (conductive pollution, typical for industrial enclosures). Altitude limit is 2 000 m. The front and terminal faces are IP20 — finger-safe but not washdown-rated; install inside a panel with a higher enclosure rating if the environment is wet or dusty.