What It Is and Where It Fits
The Siemens SIRIUS 3RT1016-1AR02 is a size S00 power contactor for switching motor and resistive loads in control panels. It mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 50022, fitting a 45 mm wide footprint. Rated for 4.5 kW at 500 V and 5.5 kW at 690 V, it handles motors up to those power levels. At 24 V it carries 10 A, at 230 V it carries 6 A, covering control transformers and small heaters.
Key Ratings and What They Mean for Your Panel
The AC-2 rating of 4 kW at 400 V means it is suited for slip-ring motor switching, where starting current is moderate. The AC-4 rating of 8.5 A at 400 V covers reversing and inching duty, where contacts break full motor current on every cycle. IP20 on the front and terminals means it is protected against finger contact but not moisture — suitable for dry indoor enclosures. Pollution degree 3 confirms it tolerates conductive dust in industrial environments. Operating temperature from -25 to +60 °C covers most plant-floor conditions. Maximum altitude of 2000 m means no derating needed for most installations below that height.
Wiring and Coordination
Screw-type terminals accept solid conductors: 2x 0.5 to 1.5 mm², 2x 0.75 to 2.5 mm², and up to 2x 0.75 to 4 mm². AWG equivalents are 2x 20-16, 2x 18-14, and 1x 12. Side-by-side mounting is allowed, saving rail space. For type 2 coordination (no weld) use a gL/gG fuse rated 20 A. For type 1 coordination (weld allowed, safe fault clearing) use 35 A. This protects the contactor during short circuits.
Lifecycle and Sourcing Reality
Typical mechanical endurance is 30,000,000 cycles, giving a long service life in cyclic applications. For procurement, this is a standard BOM line item; RFQ for pricing and lead time.