What this SIRIUS contactor is and what it handles
The Siemens SIRIUS 3RT1035-1AK60-ZW96 is a size S2 power contactor built for switching motor loads in industrial control panels. It carries a 22 kW rating at 500 V AC-3 duty, which is the standard motor-switching category for squirrel-cage motors — meaning it handles starting and stopping under load up to that power. At 400 V AC-2 (slip-ring motor duty) it's rated for 18.5 kW, and at 690 V it still delivers 11.4 kW, so it covers a wide voltage range across European and North American line voltages. The auxiliary contact block is rated 10 A at 24 V, 6 A at 230 V, and 0.3 A at 220 V DC, covering both AC and DC control circuits. Mechanical life is rated at 10 million operations, with maximum switching rates of 1 000 operations per hour under AC-3 and 1 200 under AC-1 resistive loads.
Mounting, wiring, and environmental fit
Mounts via screw or snap-on onto 35 mm DIN rail per EN 50022, and side-by-side mounting is permitted — no derating for zero-gap packing in a panel. Width is 55 mm, depth 115 mm, height 112 mm, so it fits standard S2 contactor footprints. Main circuit wiring uses screw-type terminals accepting 2x (0.75... 25 mm²) stranded or 2x (0.5... 4 mm²) solid. The front face is IP20 (finger-safe), the terminal area is IP00 — expect bare live parts at the screw terminals, so keep tools and fingers clear. Rated for pollution degree 3 (industrial environments with conductive or dry non-conductive pollution). Operating temperature range is -25 to +60 °C, storage from -55 to +80 °C.