The Siemens 3RA2215-0HA15-2AK6 is a SIRIUS non-fused reversing motor starter in Size S00 — a factory-assembled combination of a reversing contactor pair, a thermal bimetallic overload relay, and a magnetic short-circuit trip, all on a common footprint. It ships with the contactor 3RT2015-1AK62, the link module 3RA1921-1DA00, and the circuit-breaker 3RV2011-0HA15 pre-integrated. That means one order code delivers the complete forward/reverse motor branch, not a pile of loose components to coordinate yourself. Rated for AC-3 switching duty up to 690 V, with a Trip Class 10 thermal curve, this starter is sized for motor loads up to 180 W at 400 V, 250 W at 500 V, and 370 W at 690 V. The magnetic short-circuit element handles the high-fault clearing. Mounting is straightforward: snap it onto a DIN rail or screw-mount it using the additional push-in lug. The vertical mounting position is specified, and the unit needs 20 mm clearance upward, 10 mm downward, and 9 mm at the sides — tight enough for dense S00 panels. Operating temperature spans -20 to +60 °C, with wider storage and transport limits.
When you need to confirm fit for a reversing motor application at 600 VAC, the AC-3 maximum rating of 690 V covers that voltage comfortably. The reversing contactor pair is mechanically interlocked inside the assembly, so the forward and main contactors cannot close simultaneously — a standard requirement for direction-change circuits. The auxiliary switch option (Product Extension Auxiliary Switch: Yes) allows feedback to a PLC or status lamp without adding a separate block.
The 90 mm width and 170 mm height fit the Size S00 envelope — the smallest SIRIUS feeder size, designed for high-density layouts. Depth is 97.1 mm, which includes the overhang of the circuit-breaker handle and the contactor arc chambers. When planning gland-plate clearance, account for the full depth plus the 20 mm upward ventilation gap. The snap-on DIN rail mount lets you populate a row quickly; the screw-mount option is there if vibration or panel layout demands it. The main contact wiring accepts 0.5 to 4 mm² stranded, or 2× (0.75 to 2.5 mm²) for paralleled feeds. AWG equivalents are 2× (20–16) for the contactor terminals and 2× (18–14) plus 2× 12 for the larger lugs.