The Siemens 3RT2046-1AK60 is a SIRIUS power contactor in the S3 frame size, designed for screw and snap-on mounting onto 35 mm DIN rail per DIN EN 60715. Its screw-type magnet coil terminals match the panel-wiring practices common in IEC control cabinets. Rated switching frequency varies by duty: 900 operations/hour at AC-1 (resistive), 350 at AC-2 (slip-ring motors), 850 at AC-3 (squirrel-cage motors), and 250 at AC-4 (plugging/inching). For AC-3e (electronic overload relay) the figure is 850 operations/hour. That AC-3 rate means this contactor handles frequent starting of standard induction motors without derating the coil life. Dimensions are 70 mm wide, 140 mm high, 152 mm deep — the 152 mm depth is the dimension that matters when planning gland-plate clearance or panel depth against a backplate. Operating temperature spans -25 to +60 °C, storage -55 to +80 °C.
The mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward — enough flexibility to fit tight enclosures. Minimum air gaps: 10 mm upwards, 10 mm downwards, 20 mm forwards, 10 mm at the side. Main contact wire range accepts solid conductors 2.5...16 mm² and stranded 6...70 mm². Auxiliary contacts use 2x (0.5...1.5 mm²) or 2x (0.75...2.5 mm²) solid or stranded. The auxiliary switch is included.