SIRIUS direct starter for 60 mm busbar systems
The Siemens 3RA2110-1AH15-1AP0 is a SIRIUS direct online starter in size S00, designed for snapping onto 60 mm busbar systems — a common panel layout in European-style motor control centers.
Panel fit and mounting constraints
Dimensions are 155 mm deep by 45 mm wide by 260 mm tall — the 45 mm width is a single 9 mm module slot on a standard DIN rail or busbar grid, so it occupies one position in a multi-feeder lineup. Mounting position is vertical only, with 50 mm clearance required upward and 20 mm forward — the zero backward clearance means the back of the unit can sit flush against the panel backplate, saving depth in shallow enclosures. Side clearance is 20 mm, and downward clearance is 10 mm — these are the minimum air gaps for heat dissipation from the Class 10 overload; crowding the sides raises the ambient temperature seen by the bimetal strip and can cause nuisance tripping. The main circuit uses spring-loaded terminals — no screw torque to verify, which speeds up panel wiring and eliminates the risk of a loose connection on a high-current path.
Thermal environment and derating
Operating ambient range is -20 to +60 °C, with temperature compensation active across that span — the overload trip curve adjusts automatically so the motor protection stays accurate whether the panel sits in a heated plant room or an unheated warehouse. Storage and transport limits are -50 to +80 °C — wide enough for cold-chain or desert logistics without special handling.