What this reversing starter is
The Siemens 3RA2220-1HB24-0AP6 is a SIRIUS non-fused reversing motor starter in size S0 — a factory-assembled combination of a contactor pair and overload relay that handles forward/reverse motor control in one package. It ships with the 3RT2024-1AP60 contactor and the 3RA2921-1AA00 link module already matched, so there is no guesswork on coordination.
Panel fit and clearances
Snaps onto 35 mm standard DIN rail in a vertical mounting position — no screws needed for the rail, though the feeder cables need securing. Dimensions are 120 mm deep, 90 mm wide, and 265 mm tall, which puts it in the S0 footprint that fits alongside other SIRIUS S0 components on the same rail. Clearance requirements: 30 mm upwards, 10 mm forwards, 10 mm downwards, 9 mm at the sides, and 0 mm backwards. That backwards zero means it can sit flush against a back panel or gland plate without extra standoff.
Motor power at common voltages
At 400 V 50 Hz, this starter handles 3 000 W (3 kW) motor load. At 480 V, the full-load current is 7.92 A.
Environmental and compliance notes
Operating temperature range is -20 to +60 °C, storage -50 to +80 °C, transport -55 to +80 °C. Pollution degree 3 (industrial environment with conductive pollution). The substance prohibition date for RoHS compliance is 03/01/2017.