The Siemens 3RA2110-1FD15-1AP0 is a SIRIUS direct-on-line starter, size S00, designed for snapping onto 60 mm busbar systems. It combines a contactor and overload relay in one unit, providing coordinated motor starting and protection in a compact footprint. Rated 5 A at 600 V and 4.8 A at 480 V, with horsepower ratings from 0.25 hp at 110/120 V up to 5 hp at 575/600 V.
Mounting and panel integration — busbar snap-on and clearances
Snaps directly onto 60 mm busbar systems — no DIN rail adapter needed. The vertical mounting position is specified; the unit is 45 mm wide, 155 mm deep, and 203 mm tall, fitting into a standard panel layout for size S00 feeders. Clearance requirements: 50 mm upwards, 20 mm forwards, 20 mm at the side, 10 mm downwards, and 0 mm backwards. These are the minimum air gaps for heat dissipation and arc flash containment — plan your enclosure layout accordingly. Main circuit connections use screw-type terminals — no spring-cage option on this variant. The supplied contactor is 3RT2015-1AP01 and the link module is 3RA1921-1DA00, so the starter arrives as a pre-assembled unit.
Environmental limits and operating conditions
Operates from -20 °C to +60 °C with temperature compensation active across the same range. Storage and transport limits are wider: -50 °C to +80 °C. The 60 Hz rating matches the 50 Hz rating at 0.25 A, so it works on either supply frequency without derating.