Siemens 3RT6027-1AM00 — SIRIUS Size S0 Power Contactor, 690 V AC-3
At 400 V and 60 °C ambient, it handles motor loads up to 27.5 kW; at 690 V the same condition supports 47.5 kW. These are the derated figures for a 60 °C panel environment — not the 40 °C catalogue maximum, so factor them into your thermal budget. The main current circuit uses screw-type terminals accepting 2x (0.5…1.5 mm²) solid/stranded or 2x (0.75…2.5 mm²), with a minimum permissible conductor cross-section of 10 mm² at both 40 °C and 60 °C. Auxiliary and control circuits also terminate via screw terminals.
Substance prohibitance compliance is dated 05/01/2012, covering RoHS and REACH requirements.
Side-by-side mounting is permitted, so multiple contactors can share a DIN rail segment without spacing gaps — useful for compact motor starter assemblies. Dimensions: 97 mm depth, 45 mm width, 85 mm height. The Size S0 frame is a common footprint across the SIRIUS 3RT2 series, meaning panel cutouts and wiring ducts sized for S0 will accept this unit directly.
Maximum mechanical switching frequency is 5 000 operations per hour at AC, with AC-1 maximum at 1 000 1/h, AC-3 at 750 1/h, AC-3e at 750 1/h, and AC-4 at 250 1/h. Coil consumption at 50 Hz is 0.25 A. Rated coil currents at various control voltages: 6 A at 24 V, 1 A at 110 V, 0.3 A at 220 V, 10 A at 230 V, 3 A at 400 V, and 1 A at 690 V. The 50 Hz rated coil voltage is 220 V.