What it is and where it fits
The Siemens 3RT2036-1AP60-0UA0 is a SIRIUS power contactor in Size S2, designed for switching motor loads in industrial control panels. It mounts via screw fixing or snaps onto a 35 mm DIN rail per DIN EN 60715, with a footprint of 55 mm wide by 114 mm high by 130 mm deep — that depth means it needs a 130 mm clear pocket behind the panel door, so check your enclosure depth before committing the BOM line.
Key ratings and what they mean for your load
The headline motor-switching rating is 52 A at 480 V under AC-3 duty — that's the current it can make and break a standard squirrel-cage induction motor across the line. For resistive loads (AC-1), the contactor handles higher currents, but the AC-3 figure is the one that governs motor starter sizing. The coil is screw-type terminals, rated for 24 VDC at 10 A holding current; the auxiliary switch is built in, saving a slot on the DIN rail. Switching frequency varies by duty class: up to 1 000 operations per hour for AC-1 resistive loads, 800 per hour for AC-3 motor starting, and 250 per hour for AC-4 plugging or inching. The mechanical life is rated at 10 000 000 typical operations — that's the contactor body, not the contacts under load, but it gives a sense of the base durability before electrical wear becomes the limit. Operating temperature range is -25 to +60 °C, with storage from -55 to +80 °C. The mounting position is flexible — the contactor can be rotated ±180° on a vertical surface and tilted ±22.5° forward or backward, which helps when you're squeezing it into a crowded panel where the DIN rail isn't perfectly level.