The Siemens SIRIUS 3RT1036-1BE40 is a size S2 power contactor rated for motor switching at 30 kW on 500 V AC-3 duty and 41 A on AC-4 duty at 400 V — the AC-4 figure matters because that's the plugging/inching load, which is harder on the contacts than a standard start/run cycle. Screw-type terminals on the main circuit accept stranded conductors up to 2x 25 mm². The coil draws 10 A at 24 V DC and 6 A at 230 V AC, with an operating time of 20 to 25 ms DC and an arcing time of 10 to 15 ms.
Mounting and Integration
Mounts via screw and snap-on onto 35 mm standard mounting rail per DIN EN 50022. Side-by-side mounting is permitted, which saves panel width when grouping multiple contactors. Front-side IP20 keeps fingers away from terminals inside an enclosure; the terminal area itself is IP00, so the contactor needs to live inside a panel, not in the open. Dimensions: 55 mm wide, 112 mm high, 130 mm deep.