SIRIUS S0 power contactor — 11 kW AC-2, 15.5 A AC-4
The Siemens 3RT1026-3AK60-1AA0 is a SIRIUS-branded S0-frame power contactor rated for 11 kW at 400 V in AC-2 duty and 15.5 A at 400 V in AC-4 duty, making it suited for switching slip-ring or wound-rotor motors (AC-2) and plugging/inching of squirrel-cage motors (AC-4). The AC-2 rating of 11 kW at 400 V governs the continuous motor load capacity for applications like conveyors or compressors where starting current is moderate.
The S0 frame measures 45 mm wide, 85 mm tall, and 91 mm deep, with screw-type terminals on the main current circuit accepting 2x (0.25 to 2.5 mm²) solid or stranded, up to 2x 10 mm² maximum. Side-by-side mounting is supported, allowing dense panel layouts on the 35 mm DIN rail.
The coil operates on 50/60 Hz at 110 V (50 Hz) or 120 V (60 Hz) with a tolerance of 0.8 to 1.1 times rated voltage.
