The Siemens 3RT5036-1AN20 is a SIRIUS S2 power contactor — a screw-type, three-pole device sized for motor switching in control panels. It mounts on 35 mm DIN rail per DIN EN 50022, with screw and snap-on fastening, and allows ±180° rotation on a vertical surface plus ±22.5° tilt forward/backward, giving panel builders flexibility in tight enclosures.
Mechanical endurance is 10 million operating cycles typical, which is the contactor's theoretical life before wear — you'll hit the electrical life limit (rated at 5 000 operations per hour at AC, with AC-3 max 800/h) well before that in motor duty.
Substance prohibitance date is 03/01/2017, aligning with RoHS and REACH compliance timelines.