Siemens SIRIUS 3RT1036-1XX10-0AA8 Power Contactor
The Siemens SIRIUS 3RT1036-1XX10-0AA8 is a size S2 power contactor, part of the SIRIUS modular industrial controls family. It is designated for switching motor loads and resistive loads in control panels, with screw-type terminals for the main current circuit and a snap-on mounting mechanism for a 35 mm DIN rail per EN 50022. Rated for AC-3 duty at 30 kW at 500 V and 11.4 kW at 690 V, this contactor handles the typical motor starting and running currents for pumps, fans, and compressors in that power band. The AC-4 rating at 41 A at 400 V covers inching and plugging applications where the contactor makes and breaks stalled rotor current. The contactor measures 55 mm wide by 142 mm high by 130 mm deep, fitting into a standard S2 footprint on the DIN rail. Side-by-side mounting is permitted without derating, which simplifies panel layout when grouping multiple contactors.
Ratings and What They Mean for Fit
The AC-3 rating of 30 kW at 500 V is the key selection figure for a standard squirrel-cage motor load. At 400 V, the AC-3 rating is not explicitly stated in the evidence, but the AC-2 rating at 400 V is 22 kW, which covers slip-ring motor starting. The AC-1 maximum switching frequency is 1,000 operations per hour, while AC-3 allows 800 per hour and AC-4 drops to 300 per hour — these limits govern the duty cycle in high-speed applications like conveyor indexing. For DC switching, the contactor is rated at 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V. These are the make-and-break capacities for DC loads, which are significantly lower than AC due to the lack of a natural current zero crossing. The arcing time is 10 to 15 ms, and the DC dropout time is 20 to 25 ms. The screw-type terminals accept a wide wire range: solid conductors from 0.5 to 4 mm² per clamp, and stranded conductors up to 25 mm². This covers most panel wiring from control circuits to main power feeders. The terminal protection rating is IP00, meaning the terminals themselves are not touch-safe; the front of the contactor is IP20, so it is protected against finger contact once installed in an enclosure.
Lifecycle and Sourcing Reality
The part carries a RoHS compliance date of May 1, 2012, confirming it meets the EU Restriction of Hazardous Substances directive for the current production batch. The substance prohibitance date indicates the design was verified compliant as of that date.
Mounting and Integration
Mounts via screw and snap-on onto a 35 mm standard mounting rail per DIN EN 50022. The S2 size footprint is shared across the SIRIUS 3RT1 and 3RT5 families, so the panel cutout and rail position are consistent. Side-by-side mounting is allowed, which means no gap is required between adjacent contactors for thermal reasons. Operating temperature range is -25 to +60 °C, with storage from -55 to +80 °C. The degree of pollution is 3, meaning the contactor is rated for conductive pollution environments typical of industrial control panels without additional conformal coating.