The Siemens SIRIUS 3RT1036-1XF00-0GA0 is a size S2 power contactor built for motor switching in control panels. It carries a 30 kW rating at 500 V in AC-3 duty, and 11.4 kW at 690 V — the AC-3 figure is the one that governs motor starts under load, so that 500 V, 30 kW line is what you size the contactor against for a standard induction motor. The 41 A AC-4 rating at 400 V covers reversing or inching applications where the contactor makes and breaks stalled-rotor current.
Mounting and panel fit
Mounts via screw and snap-on onto 35 mm DIN rail per EN 50022. The 55 mm width and 142 mm height fit a standard S2 footprint; side-by-side mounting is allowed, so you can gang several contactors without a gap — useful when packing multiple motor starters into a row. The 130 mm depth leaves room for wiring behind the panel door. Main circuit terminals are screw-type, accepting solid wire from 2x 0.5 to 4 mm² and stranded up to 2x 25 mm². The front of the contactor is IP20 — finger-safe for panel access; the terminal area itself is IP00, meaning the wiring zone is open and needs enclosure protection against dust and accidental contact.
Environmental and lifecycle
Coil pickup at 50 Hz is 0.8 to 1.1 times rated voltage; dropout on DC takes 20 to 25 ms. Arcing time is 10 to 15 ms. Shock resistance is 15 g for 5 ms and 8 g for 10 ms on AC — enough for panel-mounted gear in conveyor or pump stations that see vibration from adjacent machinery.
Switching frequency and auxiliary ratings
Maximum switching rates: 1000 ops/h for AC-1 resistive loads, 800 ops/h for AC-3 motor duty, 400 ops/h for AC-2, and 300 ops/h for AC-4 reversing duty. The auxiliary contact ratings cover 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V — these are the values for the built-in auxiliary block, so verify your control voltage against the curve before wiring.