The Siemens 3RA2336-8XB30-1NB3 is a SIRIUS reversing contactor assembly — a pre-wired pair of contactors in one package that swaps motor phase rotation for forward/reverse control. It ships with two 3RT2036-1NB30 contactors inside, so you're not piecing together a reversing starter from loose parts. Rated for 22 kW at 400 V AC-3, it handles the common European motor load class — think conveyors, pumps, and fans that need to spin both ways. The S2 frame size keeps it compact enough for a crowded panel.
That helps when you're squeezing it into a tight enclosure corner. Main circuit terminals are screw-type, sized for solid conductors up to 50 mm² on the main path and 1.5 mm² on the control side. Coil terminals are also screw-type — no special tools needed, just a good screwdriver.