SIRIUS Size S00 Power Contactor
The Siemens SIRIUS 3RT1017-1AS02 is a Size S00 power contactor, rated for 5.5 kW at both 500 V and 690 V AC, making it a fit for motor loads up to that power in 400 V and 690 V networks. Its AC-4 switching current at 400 V is 8.5 A, which covers the demanding reversing and inching duty cycles typical of conveyors and hoists. The contactor mounts via screw and snap-on onto a 35 mm DIN rail per DIN EN 50022, so it integrates directly into a standard panel without adapter plates. Front and terminal protection is IP20, meaning it is touch-safe for panel installation but not rated for washdown environments.
Ratings and What They Mean
The 5.5 kW rating at 690 V AC-3 tells you this contactor can switch a standard three-phase motor of that power in a 690 V system — common in heavy industrial and mining installations where 690 V distribution reduces cable size. The AC-4 rating of 8.5 A at 400 V is the key figure for applications with frequent plugging or jogging; AC-4 duty generates more arc energy than AC-3, so the lower current limit protects the contacts. For resistive loads, the AC-12 maximum operating current is 10 A, which covers heater banks and lighting contactor applications. The auxiliary contact ratings span 24 V to 230 V AC/DC: 10 A at 24 V, 6 A at 230 V, and 0.3 A at 220 V DC — enough for PLC-level control signals but derate significantly on DC inductive loads. Mechanical life is 30 million operations, which means it outlasts most machines in cyclic service; electrical life depends on the switched current and duty class.
Coordination and Wiring
Type 2 coordination (no weld under fault) requires a gL/gG fuse of 20 A; Type 1 coordination (welding allowed) permits a 35 A fuse. For a panel builder, this means the upstream protective device choice directly affects whether the contactor survives a short circuit. Screw terminals accept 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or max. 2x (0.75–4 mm²) solid/stranded, and AWG equivalents 2x (20–16), 2x (18–14), 1x 12. That covers standard control wiring up to 4 mm² without lug adapters. Operating temperature range is -25 to +60 °C, with pollution degree 3 — suitable for industrial environments with conductive dust or humidity, but not for clean-room or medical-grade air. Maximum operating altitude is 2 000 m; above that, derate per IEC 60947-4-1.