What this contactor is and where it fits
The Siemens SIRIUS 3RT2036-1CL24-3MA0 is a Size S2 power contactor rated 52 A at 480 V in AC-3 duty, meaning it switches three-phase motor loads up to that current under full load. Screw-type terminals on the magnet coil and main contacts accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded wire. It mounts via screw and snap-on onto a 35 mm DIN rail per DIN EN 60715, with a mounting position that allows +/-180° rotation on a vertical surface and +/-22.5° forward/backward tilt.
Key ratings and what they mean for the panel
The 52 A at 480 V AC-3 figure governs motor switching capacity. For resistive loads (AC-1), the maximum switching frequency is 1 000 operations per hour; for AC-3 motor duty it is 800 per hour, and for the more severe AC-4 plugging/reversing duty it drops to 250 per hour. The main contacts are configured as 3 normally open poles (3 NO). Auxiliary contacts are not included on this variant — if you need onboard auxiliaries, this is the wrong order code. Dimensions are 114 mm high, 55 mm wide, and 174 mm deep. Clearance requirements: 10 mm upward, 10 mm forward, 10 mm downward, and 6 mm at the sides. Operating temperature range is -25 to +60 °C; storage range is -55 to +80 °C. The coil draws 0.36 A at 50 Hz and 0.39 A at 60 Hz at 230 V rated value.