What this direct starter packs
The 3RA2110-1AD15-1FB4: This is a Siemens SIRIUS direct (on-line) starter, size S00 — a pre-assembled combination of a contactor, a thermal overload relay, and a circuit breaker in one unit that snaps onto 60 mm busbar systems. Rated 550 W at 400 V and 1.6 A at 480 V, it handles small three-phase motor loads — pumps, fans, conveyors — common in control panels where space is tight.
Drop-in assembly — what's supplied
The starter ships with the contactor (3RT2015-1FB41), the link module (3RA1921-1DA00), the circuit breaker (3RV2011-1AA10), and the busbar adapter (8US1251-5DS10) already matched — no separate sizing or wiring between components. Mounting is vertical only, with the unit snapping onto 60 mm busbar systems — no DIN rail required, which saves panel width and simplifies busbar connections in a motor control center. Dimensions: 200 mm high, 45 mm wide, 155 mm deep — the 45 mm width is a single S00 footprint, so you can pack several starters side-by-side on the same busbar run.
Clearance and environment
The mounting position is vertical, and the required clearances around the unit are: 50 mm upwards, 20 mm forwards, 20 mm at the side, 10 mm downwards, and 0 mm backwards — meaning it can sit flush against a back panel or enclosure wall. Operating temperature range is -20 to +60 °C, with storage and transport from -50 to +80 °C — fine for unheated warehouses or shipping in cold climates.