What this SIRIUS starter carries
The Siemens 3RA2110-1HD16-1AP6 is a non-fused motor starter from the SIRIUS 3RA2 series, size S00, configured as a direct starter. It ships with a 3RT2016-1AP61 contactor and a 3RA1921-1DA00 link module, so the assembly is a single order-code line item that mates the contactor and overload relay on the factory-supplied busbar interface.
Dimensional fit and mounting constraints
The footprint is 45 mm wide by 200 mm tall by 155.1 mm deep, with a vertical mounting position specified. It fastens by snapping onto 60 mm busbar systems — no DIN-rail adapter needed if the panel uses the standard 60 mm centre-centre busbar pitch. Clearance requirements: 20 mm upwards, 10 mm downwards, 9 mm at the side, and zero forwards or backwards. That zero forward clearance means the front face can sit flush against a panel door or adjacent component without additional air gap, provided the busbar system provides the vertical support.
Environmental and wiring limits
Pollution degree 3 means it tolerates conductive dust and occasional condensation — typical for industrial control panels not in a sealed cleanroom. The S00 frame size limits the lug width — stay within the 4 mm² maximum to close the terminal cover.