Direct starter for 60 mm busbar systems
The Siemens SIRIUS 3RA2110-1GD15-1AP0 is a direct-on-line starter in size S00, designed to snap onto 60 mm busbar systems — a common panel layout in European switchgear. It ships as a pre-assembled unit with the 3RT2015-1AP01 contactor and 3RA1921-1DA00 link module, so the BOM line is one order code instead of three separate components. If your motor has a long acceleration time (high-inertia flywheel or loaded start), you would need a CLASS 20 or CLASS 30 overload relay instead. Rated at 2.2 kW at 400 V, this starter covers the common 3 hp (2.2 kW) motor frame on 400 V three-phase networks. The 690 V rated insulation voltage gives headroom for IT systems or 480 V installations where phase-to-phase voltage stays under that ceiling.
Mounts vertically only, snapping onto 60 mm busbar systems. Clearance requirements: 50 mm upwards, 20 mm forwards, 20 mm at the side, 10 mm downwards, and zero backwards. That zero backwards clearance means it can sit flush against a back panel or busbar support without derating. Dimensions are 155 mm deep × 45 mm wide × 203 mm tall. The depth is the critical dimension when fitting into a shallow enclosure — 155 mm leaves room behind a 200 mm deep cabinet door with typical wiring space.
If your panel standard mandates cage-clamp for vibration resistance, check the 3RA2110-1GD15-1AP0's sibling with spring terminals.